Two years ago, the PCs in my game were attacked by a squadron of Peeps, represented on the board, not surprisingly, by Peeps. When a Peep attacked, it always knocked the target prone, but didn't do any damage. The only way to stop the onslaught was for the players to grab the Peeps and eat them. At least that was the plan. However, after only a couple of the Peeps had been dispatched, one of the players asserted that his PC cast the spell Summon Easter Bunny. The Easter Bunny appeared and led the remaining Peeps over the hill and into the distance, out of sight, meaning that the DM had to consume the rest. That'll teach me.