What is your most obscure video game related item you own...

[Tech13]

I will go first. I have a PS1 one handed rpg Controller by ascii. Not exactly rare but it is one of the odd things I own.

[TDIRunner]

I'm assuming you got the idea from the other thread.

Not sure which item is really the most obscure, but I will include a short list:
   Wireless 3DO controllers with box
   3DO SNES controller adapter (allows you to use SNES controller with the 3DO)
   3DO mouse
   Atari Starpath Supercharger along with a little over half the library on cassette tape
   Jaguar CD (not super obscure because everyone has heard of it, but there are so few in existence)
   PS1 dual analog flight stick controller
   I also have one of the one handed ASCII PS1 controllers

EDIT - one more
   voice module for the Odyssey²
 

[Tech13]

how rare is a working Jag cd drive?

[sheep2001]

Not sure on obscurity of these really, but here goes:
     Nintendo iQue console, fully boxed
     Boxed Super Wild Card for the SNES - not that obscure, but there aren't many around these days
     Colecovision Trackball and Steering wheel
     Coleco Gemeni Console
     PS1 4 gamers turbo controller along with a ton of other weird 3rd party controllers bought in lots
     Boxed Namco JogCon controller for PS1

[ShoothimNow]

I am at work, none of these pictures are mine
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I have the boob NES controllers....  and I am not kidding you.  The like... size MMM boob size controllers.

2x of these



Along with your ASCII (in box) PS1 controller


along with the PS1 Glove Controller


And the N64 version (with box)


Along with a N64 Film Camera (with box)


I forgot about the NakiTEK Game Saver+ for SNES


JVC X'Eye with controllers


God of War Skateboard Deck


Portable Screen + Battery Pack for Gamecube

[TDIRunner]

how rare is a working Jag cd drive?

I don't know the numbers, but they only sold something like 250k actual Jaguar units, so the CD add on unit number would be considerably lower because what percentage of Jag owners actually bought one?  On top of that, they were notoriously unreliable, so many of them are no longer functional today, and while repairs may be possible, it's likely that a good chunk have been trashed.  I typically don't use the word rare because I don't like it and find it difficult to define.  I probably should have said uncommon.  But regardless, there aren't many out there.  

[maximumbob54]

The most obscure thing i have is a third party Xbox controller called the Nyko Airflo Ex.  It has a fan in the back and ports for air to be directed into your hands.  It's the typical quality in that it's not as good as a first party controller but not horrible but the fan really does work at keeping your hands from getting that clammy moist feeling after a lengthy gaming session.  As long as controllers were corded I'm surprised this wasn't a more used idea as once I found it I loved it. 

[Megatron]

While not my most valuable items (that honor likely belongs to my CIB Hagane), my most uncommon items are probably:

My SNES box with store warranty card still attached (they usually removed these at the store when purchased)



And this weird 3rd party Master System controller.  It's NES counterpart is far more common and I have never really seen another one of these in person and only once or twice on eBay.

[Bear78]

Probably a Hyperscan