I bought a piece of 1.5 inch stiff foam to try to fix a sag in a bed. It didn’t work but having that thick piece of solid foam around has been a life saver.
Need something flat to put a laptop on? Throw it on the foam. Going to be doing something that requires you to be on your knees for a while? Get the foam!
It went from stupid purchase to something I’d gladly replace if it broke.
You know, that idea wouldn’t work if you replace the thing all at once, right?
Oh, I bought the second one for parts but it turned out to be in better shape than my old one. So I moved a bunch of the parts from the first one over to the second, because neither was working before I did that.