What is something really stupid you purchased that turned out far better than expected?
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.
Those thing saved my life (nearly). I had a terrible period of insomnia which started to really impact my ability to operate during the day and after trying pretty much everything I spent the 60 bucks or whatever those thing cost and started listening to audiobook when going to sleep and it cured me.
My first version was wired but seeing how much I used them, I ended up buying a Bluetooth one because waking up with my face tangled in the wire wasn't that great.
I love those things. I'm honestly scared the company would go out of business.