Hacking DS slot-2 peripherals

[Nitro Edd]

I was just surfin around randomly and found a couple of slot-2 peripheral things and they kinda interested me so I went googlin a bit and found all of these, and I want to know if anyone knows any others?

input devives

CODEmotion pak

paddle controler

slider ,optical mouse (nintendo)

guitar hero grip (nintendo)

Piano

Camera (nintendo)

Others

CODEradio

gps

game timer

diabetes blood checker thing ( ? )

 

[Frogman]

the ds camera thing is interesting......

offtopic question: what game is that on the piano one??

 

[Nitro Edd]

and I want to know if anyone knows any others?