Add one tsp of bicarbonate of soda to 100ml of PVA glue, stir until fully mixed. Add your food colouring to the mixture and stir well, it can be whatever colour you like! Stir in small amounts of ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Dorie Chevlen Dorie Chevlen is a writer covering home design. Her subjects ...