Pour one teaspoon of the borax option in excess of the glue, but really don't stir it. Step 1: Mix 1 teaspoon borax with 1/3 cup warm water in a glass. Add gelatin, 1/3 teaspoon powdered cocoa, and about ten broken cereal flakes. And it is very best not to set it in a warm location -- a single of the substances is gelatin, which may well soften if it is warmed, earning a massive mess.