Walking Worm — A paper worm folded into segments. Thread-spool wheels threaded with rubber bands tied to the frame. A 1 m string twists the rubber into a spiral; pulling up and releasing alternately makes the worm inch along.

"The thread spool wheels will rotate along with the centrifugal force of the elastic spiral, allowing the caterpillar to walk or inch forward." (Sirindhorn Anthropology Center, no author specified, CC BY 4.0)

Use tree bark, leaves, or paper, cut into long crescent shapes resembling a caterpillar. Fold the edges to make the body segmented, and pierce a hole through the top of the caterpillar.

Thread the rubber band through the spool hole and tie both ends of the band to the inchworm frame

Tie a rope or thread about 1 meter long to the spool wheel

Walking worm drawing (Sirindhorn Anthropology Center, author unknown, CC BY 4.0)

Twist the thread spool so the rubber band winds tightly. Pull the end of the string up and release it alternately. The spool wheel spins with the force of the twisted rubber, and the caterpillar will walk or inch along.

The walking worm can be made from bark, leaves, or paper. Source: Sirindhorn Anthropology Centre, Folk Tools and Utensils Database, "Nohn Dern" (Walking Worm), author not specified (licensed under CC BY 4.0) **Limitations** The source does not give the size of the worm or the thread spool. The illustrations are drawings. There is no product listing for a plain wooden thread spool.