Kids of all ages will have great fun painting these blob monsters, but of course the idea is primarily aimed at younger children, who will be delighted with the results! Why not paint lots of blob monsters then cut them out roughly and hang or display them around the room...
You will need:
Squirt a blob of paint on to the paper. Quickly blow through the drinking straw at the paint so it spreads out into a suitable "blob" shape.
When the paint is dry, stick on googly eyes and draw on mouths.