Have you looked into eBay? It's amazing what people will buy there, if you price it right and describe and photograph it well.

Today it took a couple of passes through the laundry room and garage before I found two packages of weather-stripping. I have to redo what is around my sliding glass door. Now that there is a dog door spring load panel there the people passage isn't as wide, so I've bumped into the weatherstrip too often and torn some off. That needs replacing, and I need to figure out how to keep warm humid air from coming around through the gap on the side of the door opposite from the dog door panel. I was going to stop by Home Depot, but this wasn't so urgent that I couldn't hunt around the house first for what I thought I might already have in readiness. A few bucks saved. Next problem to solve, probably just around the corner. . .