hmm... well, let's see what I have that would qualify...
20rd of 7m rem magnum -- never used it because I don't have a rifle in that caliber
5ish of .410 shotgun -- I don't own a shotgun, and this is old paper hull stuff from ???
2ish of 20ga shotgun -- same as above
200ish of 12ga shotgun -- I should have my very first shotgun by the end of the month, and this is my "larnin howta shoots it" supply, but again never used any
hmmm... what else... 5 .308 nato, 10 .45ACP Rimmed (though that's borderline 'cause I've used normal 45ACP) ... I think that's about all I have lying around that I've never used.
I have a bunch of fired brass in calibers I've never used because I've always been in the habbit of policing up whatever good brass I could find regardless of type when at outdoor ranges. 30-30, 50AE, 45/70, 444, etc....
Other than that I don't keep much ammo around. I only have half a box of 9mm left, and that's mix-n-match of JHP, ball, and truncated cone. I keep wanting to order some bulk ammo but shipping's been a killer. I'm probably going to have to put in an order before the end of the year though.