Make Your Own Art
I just found some of my old comic books over the weekend and was blown away by the artwork in these things. I started messing around with them and ended up making some collages. Maybe the old comic book nerd in me came out, but it was pretty damn fun.
If you're always looking for new prints or posters, give this a shot. Go out and get some comics (they're cheap), cut em up, and see what you can come up with. The art is amazing and you can make some really cool stuff.