Racers and Funny Cars
What child wouldn't want to color a cool 4-wheel drive passenger frog, a wheeled donut, a go-cart Orca-mobile or a rhinoceros roadster racing on round rollers?
Virtually any subject can become a two wheeled crazy critter. Have fun with your child and encourage the imaginative process. Draw two circles and have them design a creature, or a house or a shoe on wheels. There probably isn't a great deal of use for these silly images, but fun is always a good excuse for creative playtime, plus it could be a good opportunity to discuss the invention of the wheel.
Could make some cute animal wood scroll saw toys for children or paint and give as gifts.