Rarest gaming item you own?

[SonicBoom]

All of my games ( at least most of them) are common crap. The rarest thing I have is Star Control CIB, Sega Genesis, Uncommon, Not rare. What about you?

[wiggyx]

N64DD Dev Kit NIB. Paid 200 bucks for it on eBay about 5 years ago

[Jaruff]

Rarest thing I ever had was a Nintendo 64 test cartridge but I sold it a few months ago. I guess the most rare item right now is the official Sega power strip I bought the other week.

[sloan]

Could be my Hori Mini N64 controller. Or R9 rated X-Man Atari VCS game. Maybe my recent purchase of D2K Arcade for Intellivision?

[Schiggidyd]

I'm not sure..
Factory sealed Chiki Chiki boys on Genesis
Factory Sealed Bachelor Party on Atari
CIB NES Top-Loader

[Badhornet]

Music Machine for the 2600