You can make crude mechanical clockwork out of wood. E.g. https://www.lisaboyer.com/Claytonsite/Claytonsite1.htm https://www.lisaboyer.com/Claytonsite/Claytons

You can make crude mechanical clockwork out of wood. E.g. https://www.lisaboyer.com/Claytonsite/Claytonsite1.htm https://www.lisaboyer.com/Claytonsite/Claytonsite1.htm These are obviously more elaborate than you'd need because they're artwork as well as functional clocks. (Some are just kinetic sculptures.)