The only idea that I can think of is the one they use for school fundraisers. The person who sells the most tickets wins a prize. I agree that many people don't want to burden others and just buy their tickets. It also sounds like it's an option for members to take tickets to sell. Maybe consider changing the charter so everyone has to take a small number of tickets? Or maybe, since this benefits a charity, you don't make and raffle a quilt. Just take the money you would have spent on the materials and ask for cash donations. Seems like our guild got better participation if we asked for quilts to give directly to the charity rather than a raffle.