PENCIL DARTS.
STEP 1: Draw (or print) a target like this one on a piece of paper:
STEP 2: Put it on the floor on an area of carpet.
STEP 3: Take turns to stand up and lean over the target - dropping a nicely sharpened pencil (point down) onto the target. Whoever has the most points (Heh, heh...Points - geddit?) after 3 tries wins!