Required items: a sheet/tarp hanging to divide the room, about cub head height, and a pile of clothing or other soft items.
Divide the kids in to two teams, one of either side of the divide. Randomly throw half the clothing on either team floor. The aim is to get your "room" clean by throwing items over the wall into the other team's room. Each kid can only pick up and throw ONE item at a time. Winners are the first to get their room clean.