Silly Slime This is a lot like the store bought silly putty, but a lot cheaper! The longer you play with it, the more fun it gets! It stays fresh in a baby food jar for weeks. Try blowing bubbles with it, by stretching a blob over your lips and gently blowing. 1/2 cup white glue 1/2 cup liquid laundry starch Measure glue and liquid starch into a bowl. Stir thoroughly. Let rest 5 minutes. Knead it with your hands, until it comes together. Just when you think it is ruined, it suddenly turns into a wonderful long-stranded glob!