another fun one is to buy the sticker stars (at walmart, etc) and give everyone a sheet or two...then tell them they are the quiltoskito (misquito) and they are to put their bites all over people all during the retreat, etc...for the day. Only they are to bite w/their stickers and try not to be noticed doing it. It's great fun and funny to see people walking around w/stickers all over them and they are really not aware of how many they have been zapped with...then surprise them at the end of the day w/a small gift for the one that seems to have the most 'sugar' or they wouldn't have been bit as much:))You can come up w/a different variation of this...but, it is really fun and keeps things alive and exciting!:0)