When I use random assignment for informal groups, I like to be creative and use other than numbers. I am lucky to have Dollar Stores in the area, so sometimes I buy pencils in assorted designs and have them draw. Or organic lollipops and separate by flavors. Once I used favorite Halloween costume categories: scary, historical figures, occupations and so on. But in that particular class, I already knew that everyone celebrated Halloween. Not everyone does so the last suggestion is not always appropriate. I work with creative students and out of the box random assignments can be mini ice breakers in themselves. I am curious to know what else people have done.