During a morning at playgroup the boys did some cute little paintings using cotton buds (also called q-tips or cotton tips). Later, we tried it at home.
I had cotton buds in the bathroom, so we got out enough to have one cotton bud for each paint colour. We put a blob of paint on a plastic take-away container lid, and the boys got started painting.
They had lots of fun spreading the paint with the cotton buds. After a while T1 also used his fingers to add some paint to his page, but mostly they stuck with the cotton buds.
Once they had finished, I threw the used cotton buds out, and washed off the paint trays. This was a cheap, simple and fun activity to do with my toddlers.