The fact that you have a jar of peanut butter on your work table makes me respect you all the more.
I'll eat it straight out of the jar with a f*ckin' spoon, yo!
start a list...
prosound (1/8, 1/4, and rca)
bivert
back light
internal arduinoboy
variable clock
half clock
over clock
ps2 port
and the most necessary. case lights.
http://www.youtube.com/watch?v=JAzT11Pb r_embedded
That's a good start. Need to research the arduinoboy phenomenon a little bit (my only real experience with arduino is robot related).