How about dress like someone from a specific decade? With all the tie dyes and peace symbols everywhere it should be easy to come up with a hippie/60's outfit. Goodwill has long colorful dirndl type skirts, add a tie-dye shirt, affix a handmade headband with a peace symbol, which can be made out of brown constuction or colored paper, and wear a leather look alike necklace (can be construction paper, or a shoelace) affixed with a paper peace symbol. Best part you can wear your most comfortable sandals. Goodwill even sells very inexpensive children's straight hair wigs that fit most adults. Good luck and have fun!