I happen to be a mom who works both in and outside my home. I spend my sunrise to mid day at home with my own little ones and from mid day to sunset (in the winter the sun sets at what seems like 4pm) with other little ones as a Kindergarten teacher. My favorite part of both of my jobs is getting messy! I love doing all sorts of fun projects and around my house and classroom it seems that even crayons tend to make a mess!
mommyapolis 
how about little feet on canvas. Try a twist on the old “hand” prints at various ages by painting or having the kids (or you) paint the bottom of their feet and then walk / run across a prepared canvas. Truly delightful!