Homemade Mod Podge: White school glue + A jar with twice the volume of your glue. Squeeze the glue into the jar. Fill the glue bottle with water. Seal and shake. Now squeeze that watery stuff into the jar. Seal and shake. Go decoupage something.
NEED TO KNOW: MOD PODGE FORMULAS EXPLAINED. Did you know that you can make things glow in the dark with one formula of mod podge? There is even an outdoor formula, and a hard coat that works well on furniture.