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.
My wife bought me a Beard Bib as a joke gift after I found it online one day. It’s basically a smaller version of the bibs you wear when getting your hair cut, but with suction cups attached to the bathroom mirror to hold it horizontal and catch stray hairs when using an electric shaver. It looks ridiculous.
I now use it every time I trim my beard, even if my wife still laughs at me every time she sees me in it. Cleaning up all the stray hairs was always a pain in the ass, but this thing does a surprisingly good job at catching 99% of the hair, and I can just brush it all into the trash when I’m done.