Outdoor Gear Owners - Repairable Gear Experiences

Repairable Gear: I'm working on a story, and I'd like to crowdsource some options. Have you had a good (or bad) experience with repairable outdoor gear? Have you shipped a tent back to be fixed and been delighted to discover a $13 repair that kept it going for 10 more years? If so, drop a quick blurb in the comments with the who and the what. I'll reach out if it's a fit for what I'm working on. (Note: Tents, sleeping bags, pads, backpacks, shoes, whatever--it all works!)