Awesome wall decorations for a teen room?

ya so far in my room i have random nick-nacks and cool objects.

some car parts hanging on the wall, a framed set of 2 dollar bills, a giant penny, neon pac-man sign, large game pieces (jack, dice, and monopoly car).

so basically my style is out of the ordinary, things most people would think to put as decorations, but it looks awesome.

so i was thinking of some more strange, cool, interesting things to put on a wall.

a captain america shield would be cool, Ive never really seen captain America in anything, but its just a cool decoration that a lot of people can recognize, but not a lot can say they own a captain america shield. lol



so ya what are some other cool decoration ideas you have for my room?

if not i hope you got some ideas from what i already have.Awesome wall decorations for a teen room?
my friend had a poster of charlie chaplin.. or maybe a andy worhol painting (campbell soups)