I can't tell you how easy this is, and yet I still have no excuse for pushing it off for 6 months. This didn't cost me a cent, and all I did was go "shopping" around my house for different objects that would fit in a clothes pin. Easy right?! I found a:
-cotton ball
-pipe cleaner
-piece of yarn
-piece off of a fake plant
-old makeup brush
-piece of foil
-glittery pom pom
-sponge
-piece of saran wrap
-feather
Then I put everything in a clothes pin and got some paint for dipping. Before the kids started painting, I asked them to predict what they thought the brush strokes would look like. Their answers were so funny and this turned into such a fun activity. I wish I had not waited so long to do this with them.