Wall decoration ideas?

[Jack of Arcades]

I'm a poor college student. Right now, my walls are depressingly barren. I can't paint the walls (they're white), or add wallpaper, or anything like that. I can't really add furniture (no room) or shelves, etc, either, so my deocrating options are limited to hanging stuff up.

I've got a bunch of pictures, but they're all fairly small and wouldn't look good framed. I figured I could put these on posterboard and staple it to the wall.

I could use a large calendar and bulletin board, I suppose.

I want to stay away from posters unless I'm framing them. I have a Kill Bill poster that's a bit raggedy since I got it when Vol. I came out.

I could add tapestries or sheets or something.

Is there anything I'm missing that would look nice? I want something a little different most of all.