I bought some paint and plaster stuff on sale like a year ago.You know for a rainy day, or a I can't believe it's still January day. And Yesterday fit both bills. So I dug them out of my crafting storage. (which I realize, needs a major overhaul.)
I think these guys were just old enough to do this without completely destroying everything within range. They thoroughly enjoyed themselves. And even though things finished quite muddy, I love them just the same.