Yeah but "cut down our material waste" isn't always the full story... Sometimes reusing an old, less efficient piece just kicks the can down the road. I've seen old pipe sections patched in that leak more heat or need way more insulation wrap than new stuff would. That extra energy loss over years feels like it could cancel out the good from not throwing it away. Feels like we gotta look at the whole life of the thing, not just keeping it out of the dump today.

Exactly! Magnets do tend to grab all sorts of metal junk. It's annoying when you're just looking for one specific bolt. I've had times where the magnet picked up everything but what I needed. Then you have to clean off all that trash, which adds more work. Plus, if the bolt is stuck under something non-metal, the magnet is useless anyway. Sometimes just getting down and looking carefully is faster and less messy.