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.
More of a gift I got for Christmas than something I bought, but a rechargeable wand vacuum. Thought it was really stupid, but the dang thing is useful. I’ve used it for anything ranging from sucking up hair in the bathroom to getting the baseboards around the house so I don’t have to get a duster to do it that way. Have even taken it out to the car to remove a lot of the dirt and debris that gets into the driver-side footwell.
Was so versatile, I persuaded my folks to get one as well. They now love it too.
Several small flashlights that I can fit in my pocket. Having a flashlight better than your phone is incredibly convenient.
Agreed, it’s found in every household where I’m from.