Take a balloon, fill it with water, drop some food coloring in. Stick it outside, let it freeze solid.
Peel off the balloons, put them out in the snow before your kid wakes up. Then, tell him that last night, as ice-dinosaur came and laid eggs.
A.R.Witham is the Emmy-winning writer of Black Jack, the world’s first animated novel. Get the first 2 chapters free on your iPad by clicking here: https://itunes.apple.com/us/app/black-jack-a-moving-novel/id734453929?mt=8