Game: Where's the Mouse?

Gather a lot of teacups and put them upside down on a table. Under one of them, you hide a Dormouse (any small toy mouse). Your guests take turns and may lift one cup per turn to see whether something is underneath it. The one who finds the Dormouse wins, and gets to hide it the next time. You can make the game harder by inventing extra rules, like shuffling the cups after each turn.  Set the number of times you will do this game before stopping – not everyone will get to find and hide the mouse.