2 speed gearbox

You'll need 4 screws from basically any toy, 3 bears with an inner diameter of 7mm and an outer diameter of 11mm. You might wanna grab a lighter to melt stuff and mold it.

You will need some drill bits, sandpaper, Grease and a knife
I didn't intend for this to be universal and used by everyone so it will be a bit difficult to make.
Good luck