We have been so excited for spring at our house. Unfortunately we thought it was here, unfortunately winter hasn't gone down without a fight, so we've been inside more than we would like. But we've done a couple fun things, this one is definitely the messiest-and the funnest (is funnest a word?).
Butcher paper (I've been saving the paper they wrap your things in from Thai Pan for a while just for such an occasion)
Washable Finger Paint (I know it says washable but are you SURE it's washable?)
Tape the paper down to cover a spot or your whole kitchen floor. I would somehow barricade the carpet areas-our kitchen has a very small entrance so I just put a chair there so M* couldn't escape easily. I put the finger paint on plates but I think it would work even better if you just put it straight onto the paper. Let your kid go to town walking with the paint all over the paper. Towards the end she sat in some and then scooted down the paper, that was a riot, then we just painted with our fingers. Be sure when you are walking to keep fresh paint on your little ones feet because once it becomes a little dry little feet start to stick to the paper.
Alternative: Put on some music and dance whilst feet-er painting.
Just a tip have something to at least wash your feet off so that you can carry you and your child straight to the tub.