Use a cardboard box with holes for head and arms painted white and red, with popcorn stuck all over the top of it and a hat with popcorn all over it.
Thanks to Jenny for this unique idea!
Another Idea
For Halloween, my Church was having a party with a costume contest so I took a big box and cut it to fit me. Then I cut head and arm holes and painted yellow and red stripes going up and down on it.
To make it look real, I glued a ton of popcorn to the top to make it look like it had popcorn in it.
I was a popcorn box! And, I won $100 for first place in the costume contest.
Thanks to Courtney for this addition!