Total time: Two hours (includes drying time).
All you need: Black paint, a one- to two- inch paintbrush, white adhesive Velcro ($9 for five feet, officemax.com), assorted Matchbox toy cars ($7 for five, toysrus.com; or free from under the bed), and scissors.
How to put it together:
- Wipe the door frame, then paint it black. If it isn’t flat, paint a four-inch stripe around the outside of the frame for a smooth track.
- Snip the Velcro into one-inch strips. Attach the soft sides to the bottoms of the cars (or to the wheels on a monster truck). Once the paint is dry, stick the rough sides of the Velcro to the track to make lanes.
Alternative: Use green paint and toy animals for a farm scene.