the no-bean bag

As an experiment, I am trying different materials to fill Rory's bean bag instead of little carcinogenic polystyrene balls. So far I have tried cotton wadding (great natural filler that is hard to find), but it was too heavy and lumpy. Now I am collecting biofill, that stuff that is used for packaging and claims to break down in the compost - only problem is, it really does break down and results in a bit of a sad looking bean bag after someone heavy has sat on it.