A really cool Death Star bean bag chair cover from Thinkgeek:
Fight back against the Empire by sitting on the Death Star! Your body weight will sufficiently deform its shape, making it impossible for them to fire the Concave Dish Composite Beam Superlaser when ready, perhaps saving Alderaan in the process. (Your butt just saved millions of people!) And you get the benefit of a cozy, fully-operational bean bag chair (once you supply your own fill).
This bean bag cover is made of durable polyester and features a double safety locking zipper to prevent your Younglings from opening it, though they will still enjoy reenacting the Battle of Yavin all around it.