We have everyone who wants to play bring 5 coordinating fat quarters in a brown lunch bag. One person assigns them to someone else. The person who gets them makes whatever they want adding fabric but not removing any. On an assigned day each one gets an item that probably they wouldn't make or make a block they wouldn't make, and makes someone use colors they don't like to use. Each person can write a note to tell what they don't want. Rarely anyone is disappointed. It thought me to work with fabrics I dislike, because is all about the recipient.