You know that bath salt/ bubble bath stuff that's sort of chalky looking? It looks like a mix of salt grains and dry oats. Pour it in, let it dissolve, bathe. Helps the skin, it does. Anyway, I've been wanting to sneak into someone's bathroom to swap their bath salt with dried mashed potato mix (the instant food dust that, through the miracle of science, turns to mashed potatoes with the sole addition of water) I just like the idea of someone settling in to a nice hot bath that quickly turns to a tub full of mashed potatoes.