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.
VPN. I bought it during the pandemic not for privacy or government spy conspiracy shit, but because it was on "sale" (something like $40 for 38 months or something) and I wanted to try out if skirting geoblock was worth it. It's now probably one of the most-used tech we have in the house. Great for running Max obviously but also for work.