I joined a clock collecter group a couple months ago, and last week one of the locals, knowing i was mechanically minded, called me up and filled up the back of my car with broken cuckoo clocks. Cuckoos are a good place to start, since they don’t require a lot of precision to go (they are designed to get bogged up with dust), and you are not destroying anything valuable.
I might be doing the world a favor by destroying this one:
There was a solid oak case that might have belonged to a desk clock in the box too. The movement is a lot newer than that last one, same design, but thin metals that gets damaged if you handle it roughly and use of cheap steels in the gears. I cut some brackets and got some old doorplates from the Stanford-and-Son antique shop down the street and got this:
Whoops, it is seriously out of beat. I have to turn it crooked to make it go. Next time think harder about the brackets. Make them adjustable, or take better measurements.
Does it work? Of course it does!