So what did you dress up as? Post a picture of it!
I was the iPhone... for no other reason than to play on the pop culture hysteria of it. And because I love making large, uncomfortable costumes that make it hard to sit down or drink beer. Here's two examples of what I mean...
1 - 2.Anyway, so I made this out of foam and black cloth and a glue gun. I recreated the buttons from scratch at 300dpi in Photoshop and printed them out on my printer. The whole thing took about 4 hours.