I enjoy many of the "machinist"-type videos from Pakistan where folk make-do under the worst of conditions repairing all manner of machinery and equipment, Pretty rough going with what limited resources at hand, but still extending the lives of things. The repair mindset. If permitted to post, here are a lot of Karachi camera shops and a peek at body/lens repair fellows. Little bit of everything.
Somebody please be the first to send off a Leica M-body for shutter repair to one of the kiosks, and do let us know how it went!