Our guild also does a dirty/bad/silly Santa. Last year one lady insisted that each person only have one option to get what they want but that's stinky cheese. We usually go through the names once then do them a second time so that people have a better chance of getting something they really like. Very few people left happy last year.
We also ask that everyone make a small quilted item to go on the outside of the wrapped package - kind of like a gift tag. We did ornaments twice. This year we're just doing small item.. there will probably be a lot of mug rugs, coaster sets, zippered bags, etc. I think I'm going to make a machine embroidered and quilted bag to go on the top of my package this year....