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Joel2

The Invention Exchange is a ritual popularized at the Gizmonic Institute whereby inventors demonstrate a recent invention for each other. As practiced by the participants in the "Mystery Science Theater 3000" experiment, it serves as an informal contest, with each side trying to "win".

Joel Robinson, as an inventor, enjoyed and encouraged the Invention Exchange. Whenever he wasn't able to show off his invention, it seemed to bother him. His replacement, Mike Nelson, on the other hand, was not naturally inclined to such a scientific endeavor and the practice gradually diminished during the first few months of his captivity, until it ceased altogether.

When Kinga Forrester revived the experiment, she also revived the practice, "competing" with Gizmonic employees (and new test subjects) Jonah Heston and Emily Connor.

List of Invention Exchanges[]

Joel Robinson Era[]


Images-1-1
Episode Joel's Invention The Mads' Invention
101- The Crawling Eye Electric bagpipes
Images-22
Canine antiperspirant
Images-20
102-The Robot vs the Aztec Mummy Airbag helmet
102 - The Robot Vs The Aztec Mummy (Shout Vol. 15).mkv snapshot 00.02.14 -2017.03.15 16.52
"Chalk Man" record and security system
Images-1
103- The Mad Monster Hell-in-a-handbag
Images-12
Acetylene-powered thunder lizard
Dinotoy
104- Women of the Prehistoric Planet Toilet paper in a bottle
ToiletPaperBottle
Clay and Lars' Flesh Barn
Clay and Lar's Flesh Barn
105- The Corpse Vanishes Chiro-gyro
Images-24
Flame throwing flower
FlameFlower
106- The Crawling Hand Safety saw
SafetySaw
Limb lengthener
LimbLengthener
107- Robot Monster Cumber-bubble-bund
CumberBubbleBund
Methane whoopee cushion
MethaneWhoopieCushion
108- The Slime People Cartoon eyeglasses
CartoonEyeglasses
Screaming cotton candy
ScreamingCottonCandy
109- Project Moon Base Juggling water
JugglingWater
Insect-a-sketch
InsectASketch
110- Robot Holocaust Nitro burning funny pipe
NitroBurningFunnyPipe
Stocking mask of the future
Unknown-4
111- Moon Zero Two Teleporting food
TeleportingFood
Celebrity mouth to mouth toothpaste
CelebrityVomitToothpaste
112- Untamed Youth Never-light pipe
NeverLightPipe
Tongue puppets
Images-7-0
113- The Black Scorpion Giant party favor
GiantPartyFavor
Mads have mutated
01.MADS-The Black Scorpion-Screen shot 2011-02-14 at 12.59
201- Rocketship X-M BGC-19 drum machine
Images-1-0
BGC-19 drum machine
FrankDrumMachine
202- The Side Hackers Joel's pet slinky
PetSlinky
Dr. F.'s slinky body
SlinkyBody
203- Jungle Goddess Radio controlled circular saw
RCCircularSaw
Dr. F.'s head is fused to a sax
SaxHead
204- Catalina Caper Tickle bazooka
Unknown-6
Tank tops
Unknown-5
205- Rocket Attack U.S.A. Candy adding machine
Images-9
Water-polo foosball
WaterPoloFoosball
206- Ring of Terror Pin-bolus
Pin-bolus
Life-size "Operation" game
Images-7
207- Wild Rebels 3D pizza
3DPizza
Hobby hogs
Images-5
208- Lost Continent No time for invention
NoTimeForInvention
Exercise variations
Images-15
209- The Hellcats Sign language translator
Images-21
No invention (but they do yell NOOOOO!)
YellNo
210- King Dinosaur Incredibly stinky sweat socks
StinkySocks
The pocket scientist
Pocketscience
211- First Spaceship on Venus Junk drawer helper
JunkDrawerHelper
Invention lost in MADs junk drawer
AbeVigoda
212- Godzilla vs. Megalon Easy-to-make Halloween costumes
MST3k 212 GvMegalon Invention Exchange- Joel and Bots
More Halloween costumes
MST3k 212 GvMegalon Invention Exchange- The Mads
213- Godzilla vs. the Sea Monster Mind controlled guitar
MST3k- The SOL crew's invention exchange for Godzilla Vs
Doggie chew toy guitars
MST3k- The Mad's invention exchange for Godzilla Vs
301- Cave Dwellers Smoking jacket
SmokingJacket
Robotic arm wrestling
Wpid-screenshot 2015-09-02-23-04-15
302- Gamera Endless salad bar
Gamera MST3K Endless Salad Bowl thumb-1
Bird cage vacuum
Gamera MST3K Invention Exchange thumb
303- Pod People Monster chord
Pod People Monster Chord
Public domain "karaoke" machine
MST3k- The Mad's Public Domain Karaoke Machine in POD PEOPLE host segment
304- Gamera vs Barugon Soda can animation
AnimatedSodaCan
Disco cumber-bubble-bund
DiscoBubbles
305- Stranded in Space "Bang"-gun variations
Images-1-1
"Bang"-gun variations
BangHarpoon
306- Time of the Apes Cellulite phone
MST3k- SOL crew's invention exchange in Time of the Apes
Miracle growth baby formula
MST3k- The Mads' invention exchange in Time of the Apes
307- Daddy-O Air freshener mobile
Images-3-0
Alien teething nook
Images-8
308- Gamera vs Gaos Fax tissue dispenser
FaxTissue
Self image printers
Self Image Printers
309- The Amazing Colossal Man Non-permanent tatoos
NonPermTattoo
A plant that reviews music
A Plant that Reviews Music
310- Fugitive Alien Musical chair
MST3k- Joel's Xylophone chair invention exchange in Fugitive Alien
Eye, ear, nose, and throat dropper
MST3k- Fugitive Alien- The Mad's Invention Exchange
311- It Conquered the World The "Sony Seaman"
SonySeaman
Hanged man costumes
HangedMan
312- Gamera vs Guiron Collapsible trashcan
Gamera vs
Racy rorschachs
RacyRorschachs
313- Earth vs the Spider CD blow drier
CDBlowDryer
Cheese phone
Images-18
314- Mighty Jack Ear-shaped earmuffs
Ear-Shaped Earmuffs-0
Formal flippers
Formal Flippers-0
315- Teenage Cave Man Rainy day ipecacs
Images-16
Nothing (Mads fight)
Images-14
316- Gamera vs Zigra Crow-ka-bob
CrowKaBob
Three Stooges guns
ThreeStoogesGun
317- The Saga of the Viking Women and Their Voyage to the Waters of the Great Sea Serpent Literal "Waffle iron"
WaffleIron
Meat re-animator (for vegetarians)
MeatReanimator
318- Star Force: Fugitive Alien II The big head
MST3k- Joel's Big Head invention exchange in Star Force- Fugitive Alien II
Big noses
MST3k- The Mad's nose invention exchange in Star Force- Fugitive Alien II
319- War of the Colossal Beast Between-meal mortar
BetweenMealMortar
Breakfast bazooka
BreakfastBazooka
320- The Unearthly Celebrity products
CelebrityProducts
Hard to swallow pills
HardSwallowPills
321- Santa Claus Conquers the Martians Misfit toys
MisfitToys
Wish squisher
Images-13
322- Master Ninja I Pop-up books for adults
AdultPopupBooks
Boil-in-a-bag IVs
TheMadMasterNinja
323- The Castle of Fu Manchu Extremely useful phone circuit/the big head again
PhoneCircuit
Joe Besser "Stinky" bomb
StinkyBomb
324- Master Ninja II Perpetual hamster habitat
PerpetualHamsterHabitat
Conveyor belt buffet
Conveyer Belt Buffet
401- Space Travelers The dollaroid
Dollariod
Facial tissue
401-tissue-0
402- The Giant Gila Monster Sitcom radio
SitcomRadio
Renaissance festival punching bags
RenFestPunchingBags
403- City Limits Mr. meat and potato head
MeatPotatoHead
Pop star Tupperware
MST3k City Limits- MN as Morrissey
404- Teenagers from Outer Space Scratch and sniff report cards
Scratch&SniffReportCards
Resusci-Annie ventriloquist doll
Rescesi-Annie
405- Being from Another Planet Jack Palance impersonation kit
JackPalanceKit
Tragic moments figurines
Tragic Moments Figurines'
406- Attack of the Giant Leeches Insty-adolescence kit
AdolescenceKit
Patches the leech
PatchesLeech
407- The Killer Shrews Jim Henson's Edgar Winter Babies
Mst407 - Edgar Winter Babies
The Mads try to destroy the Earth
DestroyEarth
408- Hercules Unchained The Steve-O-Meter
Images-3
Decorator Roaches
DecoratorRoaches
409- The Indestructible Man Cereal Novels
Unknown-3
Secret Invention
SecretInvention
410- Hercules Against the Moon Men Super freak-out kit
SuperFreakOut
Deep Hurting!
TV's Frank & Dr Forrester; DEEP HURTING!
411- The Magic Sword Big gulp berets
Images-8-0
Designer bio-hazard absorbent throw pillows
BiohazardPillows
412- Hercules and the Captive Women The womb mate
WombMate
The lawn baby
Captive2
413- Manhunt in Space Recycled paper clothing
PaperClothing
Beanbag pants
Beanbag Pants
414- Tormented Aunt Catherine Wheel
AuntCatherineWheel
Drinking Jacket
Images-10
415- The Beatniks Pocket pool
Images-10-1
Good-Luck Troll costumes
Unknown-7
416- Fire Maidens of Outer Space Nike Air Chalada
4988461501 b80173750c z
Big checkbook
Big Checkbook
417- Crash of Moons Rock and wreck guitar
Rock&WreckGuitar
Sugary Deep 13 toothpaste
Images-9-0
418- Attack of the the Eye Creatures Funny gag fax
Eyecreatures3-0
Router Ouija board
RouterOuija
419- The Rebel Set Abstract paint-by-number kit
AbstractNumberPaint
Quick primp kit
Images-12-0
420- The Human Duplicators Beanie chopper
Poorjoel
William Conrad fridge alert
Human2-0
421- Monster A-Go Go Non-violent action figures
Hqdefault-0
Johnny Longstorso
421 042
422- The Day the Earth Froze Snacktion
Images-10-0
Unhappy meals
Dayfroze3-0
423- Bride of the Monster Microwave Faith popcorn
MicrowaveFaithPopcorn
The tough love seat
ToughLoveSeat
424- "Manos" The Hands of Fate The cartuner
MST3k Manos- Joel and crew invention exchange is The Cartuner
Chocolate bunny guillotine
MST3k Manos- The Mads Chocolate bunny guillotine invention exchange
501- Warrior of the Lost World Bittersweet Hearts
Images-11
The square master
Warriorhost1
502- Hercules Instant karma
InstantKarma
Cellular desk
CellularDesk
503- Swamp Diamonds Andrew Lloyd Weber Grill
MST 27
U-View
UView
504- Secret Agent Super Dragon Micro-golf
MST 26
Virtual comedy
VirtualComedy
505- The Magic Voyage of Sinbad Rat Pack chess set
Hqdefault
Chinderwear
Chinderwear
506- Eegah Pork-orina
Pork
Replacing Frank's blood with anti-freeze
AntifreezeBlood
507- I Accuse My Parents Junk drawer organizer
Junk Drawer Organizer
Cake 'N' Shake
Cake-N-Shake
508- Operation Double 007 Sarah the bobbin buzzard
BobbinBuzzard
Lederhosen-hosen
LederhosenHosen
509- The Girl in Lovers Lane Doc Martens for Don Martin
DocDonMartins
Evil baseball promotions
Images-19
510- The Painted Hills Back-talk
BackTalk
Cholester-do all
CholesterDoAll
511- Gunslinger New whiffle items
WhiffleItems
The scanner planner
ScannerPlanner
512- Mitchell Daktari stool
512-stool
None (Mads are being audited)
Mitchellmike

Mike Nelson Era[]

Episode Mike's Invention The Mads' Invention
513- The Brain That Wouldn't Die The gutter bumber shoot

Images-17
The dream buster
DreamBuster
514-Teen-Age Strangler The waiter-baiter

WAITER
Frank-n-Forcer
FrankNForcer
515- The Wild Wild World of Batwoman Razor-back

IE-515-SOL
Atomic powered hair dryer
IE-515-MAD
516- Alien from L.A. Fridge udders
TEATS-0
Vend-a-gut
VENDAGUT-0
517- Beginning of the End New playing cards
IE-517-SOL
Re-comfy bike
IE-517-MAD
518- The Atomic Brain The Mads
Botsasmads-0
Crow and Tom Servo
Madsasthebots-0
519- Outlaw Fabio Kit
Outlawhost
Really real time machine
RealTimeMachine
520- Radar Secret Service Mike's Rope
MikesRope
Hypno Helio Static Statis, containing X-4
HHSSwX4
522- Teen-Age Crime Wave Escape via rocket pack
Lox
Mace Mousse
Macemousse
601- Girls Town The Power Steves
Sussman1
Umbilicus
Umbilicus
602- Invasion USA Mike's Robot
MikeRobot
Crow's Wire Mother & the Dr. Forrester Doll
DrFDoll
612- The Starfighters Cowboy Mike's Red Hot Ricochet Barbecue Sauce
BoldSauce
Cranial Ports
CranialPorts

Revival Era[]

Episode Jonah's Invention The Mads' Invention
1101 - Reptilicus Bubble Fan
1101BubbleFans
N/A
1102- Cry Wilderness Turkey-Theremin
TurkeyTheremin
Carvel Clock
CarvelClock
1103- The Time Travelers Dr. Crow's Old Time Edible Silica Packets
EdibleSilicaPackets
Afterlife Alert
AfterlifeAlert
1104- Avalanche Mouth Vacuum
MouthVacuum
Don la Font-aine 3000
DonLaFontaine
1105- The Beast of Hollow Mountain Disco Cannon
DiscoCannon
Titanic Hot Water Cannon
HotWaterCannon
1106- Starcrash BB-Servo
BBServo
Band-eat-o
Bandeato
1107- The Land that Time Forgot M. Night Shyamalan Living
MNSLiving
Elder Pump
ElderPump
1108- The Loves of Hercules Fried Turkey Dunk Tank
FriedTurkeyDunkTank
Mexican Jumping Beanbag Chair
JumpingBeanbagChair
1109- Yongary - Monster from the Deep Tiny Desk
TinyDesk
Hitler Coffee
HitlerCoffee
1110- Wizards of the Lost Kingdom Verbal Smoke Bombs
VerbalSmokeBombs
Sponsor Clock
SponsorClock
1111- Wizards of the Lost Kingdom II GIF Notes
GIFNotes
Punt Bunnies
PuntBunnies
1112- Carnival Magic Yeasta Pet
YeastaPet
Flavor Sweat
FlavorSweat
1113- Il Natale Che Quasi Non Fu (The Christmas that Almost Wasn't) Re-Gifter
ReGifter
Humbug FM
HumbugFM
1114- At the Earth's Core Permanent Temporary Tattoos
PermTempTattoos
Rip Taylor Urn Cannon
UrnCannon
1201- Mac and Me Spez dispensors
SpezDispensors
Algernon
Algernon
1202- Atlantic Rim Inflatable Air-Dancer Organ
AirDancerOrgan
Supposi-Stories
SupposiStories
1203- Lords of the Deep Hand-Dryer Air-Hockey Table
HandDryerHockey
Drone Probes
DroneProbes
1204- The Day Time Ended Fortune Meal
FortuneMeal
Spray-On Mustard Gas
SprayOnMustardGas
1205- Killer Fish Alchemy Glue
AlchemyGlue
Time-Travel Oven
TimeTravelOven
1206- Ator, the Fighting Eagle Swiss Army Cheese
SwissArmyCheese
Totino's Pizza Roll Popper
PizzaRollPopper
1301 - Santo in the Treasure of Dracula Crow's Blinkers
CrowsBlinkers
The Kingadome
Kingadome
1302 - Robot Wars Meat Cute
MeatCute
The Simulator of Love
SimulatorLove
1303 - Beyond Atlantis Mech Hands
MechHands
Plantsodyne
Plantsodyne
1304 - Munchie Sustain-A-Band
SustainABand
Deadmill
DeadMill
|
1305 - Doctor Mordrid Gilbert & Sulli-Phone
GnSphone
Palm Greaser
PalmGreaser
1306 - Demon Squad Mood Globe
MoodGlobe
Electric Lassos
ElectricLassos
1307 - Gamera vs Jiger Tele-Graph
TeleGraph
Plasmanator
Plasmanator
1308 - The Batwoman Vin Diagram
VinDiagram
Duck Tape Dispensor
DuckTapeDispensor
1309 - The Million Eyes of Sumuru Business Skittles
BusinessSkittles
Mug of Doom
MugOfDoom
1310 - H.G. Wells' The Shape of Things to Come Roller Coaster
RollerCoaster
Corn Cob Turkey Holder
CornCobTurkeyHolder
1311 - The Mask Multi-Mask
MultiMask
MeJa Board
MeJaBoard
1312 - The Bubble Pop Duster
PopDuster
Lens-Be-Safe
LensBeSafe
1313 - The Christmas Dragon B-52's Wig / Perpetual Motion Machine / A Paperweight That Looks Just Like a Cinder Block
TripleRiffle
Missile Toe
MissileToe

Behind-the-scenes[]

The Invention Exchange was created to feature the "prop comedy" humor of show creator and original host Joel Hodgson.

Once Michael J. Nelson was in the lead, the first several episodes continued the invention exchanges, but the segment was soon phased out to accommodate Nelson's (less prop-oriented) brand of humor.

When the series was revived 18 years later with Hodgson at the helm, the Invention Exchange returned with host Jonah Ray.

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