I used to get out the "messy" stuff for my oldest LO quit often. Now that LO2 is interested as well, it has become much more of a chore. She is much more messy with things like paint, and almost always spills the water if watercolors are out. So lately I've only been getting paints out about once a month. I know it sounds so mean but it becomes more stressful and involves much more fighting amongst the girls than it's worth.