Our all time favorite retreat game is "dirty Santa bingo." You play regular bingo and the first winner gets to pick a prize from the prize table. The second winner gets to either pick a prize from the table or take the first person's prize. The first time we played we let people open the prizes and we set a limit of three steals. The last time we played we didn't let anybody open the prizes and no limit to the amount of steals. All of the prizes were small items and ranged from just a candy bar to a fat quarter or spool of thread kind of prizes.