Lo Mai (Bamboo-Pole Push Wheel, Single Wheel) — a 1-3 Inch Hardwood Wheel in the Split, Wedged-Open End of a 1.5-2 m Bamboo Pole on a Through Axle, with a Cross Handle at Chest Height; Shouldered and Pushed at a Run

"The wooden wheel's pole rests on the player's shoulder, and it is pushed forward at a run." (Sirindhorn Anthropology Centre, author not named, CC BY 4.0)

With a knife, hew hardwood or teak 1-3 inches long into a circle, sand it smooth, and drill a hole in the centre for the axle.

Take bamboo about 1.5-2 metres long and split the lower end down the middle for about 1 internode. Drive a wedge in to spread the split end wide enough for the wheel. Drill holes through both sides of the bamboo and push an axle through the bamboo and the wheel.

Nail short pieces of bamboo crosswise into a cross at the player's chest height.

Photos of a real lo mai (Sirindhorn Anthropology Centre, author not named, CC BY 4.0)

Rest the pole on the shoulder, hold the cross handle and run, pushing the wheel along the road. Some make the wheel like a train wheel, or fit an animal figure that moves as the wheel turns.

The double wheel is made the same way but with two wheels on one axle, and a string steering wheel near the shoulder for turning. Take care with the knife and hammer. Source: Sirindhorn Anthropology Centre, Traditional Objects of Everyday Use database, "ล้อ", author not named (CC BY 4.0 licence). **Limits** The source gives the wheel as "1-3 inches long" without saying whether that is the thickness or the diameter, and gives no axle size.