Sola wood boat (rubber band boat) — 10-15 cm dry sola twigs, two twigs joined into a triangle, rubber band at the stern, bamboo propeller 3-5 cm, twist the rubber band into a spiral, release into water to run.

"When the boat is launched into the water, the propeller spins and pushes the water, making the boat move." (Sirindhorn Anthropology Center, author not specified, CC BY 4.0)

Snap off 2 dry sesbania twigs about the size of a finger, approximately 10-15 cm long. Bring one end of each together to form a gable-shaped triangle. Use a sharpened bamboo stick to pierce through the adjoining corners so they stay connected, forming the bow. For the stern, use a whittled bamboo stick to skewer the sesbania twigs so they are held together as well.

Use a knife to shave the bamboo thin, about 3-5 cm long, into a propeller blade.

Use a rubber band to tie the end of the boat's tail, then tie the propeller to the rubber strand.

Photo of a real Mai Son boat (Sirindhorn Anthropology Centre, author not specified, CC BY 4.0)

Turn the propeller until the rubber band is tightly twisted, place the boat in the water and release the propeller. The rubber band unwinds and spins the propeller to push against the water, and the boat will move forward.

Rubber bands, bicycle inner tubes, or car inner tubes can be used as a power source. Be careful with the knife while whittling bamboo. Source: Sirindhorn Anthropology Centre, Local Tools and Household Equipment Database, "Ruea Mai Sano" (Sano Wooden Boat). Author not specified (licensed under CC BY 4.0). **Limitations** The wording of the play instructions in the source is unclear in some sections. There is no product listing for the Sano twig.