1 ... a hairy pussy
Yes, don't see why.
2 ... an asshole
Yes, pretty willingly if it's clean. I'd think twice if it were noticeably dirty but would still likely follow through
3 ... someone else's feet
Yes, without really thinking twice
4 ... someone else's armpits
Yes, without really thinking twice
5 ... the pre-cum from someone's cock
Hmm, for a bet or dare yes. I think I'd do 1-4 just for a bit of fun but this one's trickier. I'll say yes but I'd need some persuasion
6 ... a dildo after it was inside your pussy
Yes...although like everyone else I'd need that pussy first 
7 ... a butt plug after it was inside your ass
Yes, and have done before
8 ... crotch of your worn panties/underwear
Yes, and have done before
9 ... something that fell on the floor
Yes, and have done before
10 ... a public toilet seat
Yes, and wouldn't take a massive amount of convincing unless it was noticeably filthy.