Some finger paint
Put all together and enjoy.
Some plastic tubs from the recycling
A paint brush
A sponge paint roller
A facecloth or rag (for the child who has paint all over, but gets distressed if it gets on his fingers!)
Our clean up consisted of some dish washing detergent, and a dish sponge/scourer.
After washing off the bathtub, the tools and the child, we run the bath with some baby oil in it, to counteract the drying effect of the dish detergent on his skin.