To make indoor snowmen, you will need: 2 boxes of cornstarch a can of foaming shaving cream a box or plastic container a sheet or tarp 1. Empty 2 boxes of cornstarch into a box, plastic container, A lid comes in handy 2. Add the shaving cream to your cornstarch. I used almost the whole can. 3. Gather together random odds and ends from around the house that can be used to play with the snow. 4. Let the little ones mix the cornstarch and shaving cream.