Really Messy Play

Cornstarch and water... Need I say more? Plain messy mush that we're allowed to stick our hands into! Squeeze it and it turns hard, let go and it gets runny again. Dries into dust so no worries about getting it off clothing or hands. This was by far their favorite activity ever, and the kids were asking me to do it again for days afterwards. It didn't last so long- they spilled it out after about 15 or 20 minutes, but I would definitely give it another try some other time.