Put water in a bowl, drop random colors of nail polish in and swirl with toothpick. put petroleum jelly on your fingers so the polish only sticks on nails not your fingers. Stick fingers in bowl, nail polish should float on top of water.
With a little patience, and kid's nail art hacks, your little girls (and boys-- who am I to judge?) will have the coolest nails of all!--Who says this is for kids only? I'm going to try the minion ones for myself!