Flubber October 3, 2015Laura Humpage Brilliant, squishy, flubbery fun. Here’s the recipe: Borax, PVA glue and food colouring. Cookie cutters in flubber make good patterns and shapes. Add buttons to make imprints or push into flubber. Add glitter or sequins to give your flubber another texture. Squishing is definitely the most fun! science / food colouring Tweet Borax, PVA glue and food colouring. Cookie cutters in flubber make good patterns and shapes. Add buttons to make imprints or push into flubber. Add glitter or sequins to give your flubber another texture. Squishing is definitely the most fun!