This is really cool and super quick/easy. Combine the following in a little bowl:

1 tablespoon self-raising flour

a few little drops of food colouring

1 tablespoon salt

Then add some water to make a nice smooth paste. Paint away on a nice thick sheet of cardboard (if you don’t have enough paint brushes use cotton buds – they work really well).

Microwave the design on high for 10 – 30 seconds until the paint puffs and it’s all nice and dry.

I have yet to try this but will post photo’s in a few days once we have had a try.