I don’t have any good ideas, but I have some bad ones.
Just looking through Amazon for replacement paddles for various bread machines. Many, but not all have a picture with some dimensions on it. If you can get some calipers or something to measure yours, perhaps you find something that way.
If you’ve friends with bread machines, ask them if you can try out their paddles to see if they fit.
Your idea of an electronics recycling center could be good too. I honestly haven’t been to one, so I don’t really know what you should expect there.
Good luck
As someone who has watched less than an hour of anything on twitch, I guess I’m going to change my avoidance of the site from passive to active.