Puffy Paint

http://www.skiptomylou.org/2010/06/10/how-to-make-puffy-paint-from-one-crafty-mumma/

How To Make Homemade Puffy Paint

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. We did ours for 30 seconds.