Or you could just use them as a giant monster bust. Not everything needs legs, you know, and with a flexible neck it can devour everything withing a 4" radius. And be neutral. At the same time. You could call it, or one similar, 'the giant monster thing that has an eating problem' and give it like 100d4 armour and stomach acid damage to everything it eats.
Often, literally, a pillow fight but may include similar situations like volleyball, particularly when wardrobe is skimpy and the action is bouncy.