Wiper Motor + Chain + Sprocket = Powerful Thing
Wiper motors can find application in many homemade machines.
I have used motors like these a couple of times in my videos.
They are very strong, take up little space and can be easily powered by batteries or AC adapter.
My winch will be used for not too heavy things, usually it will be about 30 kg, but sometimes when it is needed, a heavier weight will not be a problem.