Art by Accident

Sarah and Colin wanted to play the shoot the nerf darts at the bullseye game so Sarah took a washable marker and drew a bullseye on the sliding glass doors in our family room. After one round, she decided it was too high so while cleaning the glass door with a paper towel she found herself on the verge of a new art project. Here are the supplies: a damp paper towel, washable markers and a paper towel for drying the window when done.
Next, you color a portion of the window with the marker.
When you are done coloring, take the damp paper towel flat in your hand and wipe the are in one motion.
When you have gotten all of the marker off the window this is what you have on the paper towel.

Repeat the process with the remaining colors and put your hand in a different spot each time. Of course when all the colors have been swiped you must clean the window using the dry paper towel.
When you are done you have a very colorful piece of art!
Or many very colorful pieces of art in Sarah's case.
Now we just have to figure out what they can be used for. I guess this just goes to show you, you just never know when an art project is going to come along.