Phew. I happened upon this thread today and got excited. Not long ago I filled a plastic Easter egg with hydrated diaper gel after drilling a hole in one end to accommodate the probe.squeezed the ends together and voila my very own ghost chick. Diaper dust is the powdery polymer substance in disposible diapers. It absorbs fluids and doesn't tend to drip if done right. It looks like granulated egg whites. Best $2 investment ever.