What is an item below 100 bucks that everyone should own?

https://feddit.de/post/2136244

What is an item below 100 bucks that everyone should own? - Feddit

Stud Finder.

Knocking can get it done, but the surety of knowing is a nice to have for sure.

I’ve bought multiple digital stud finders, not sure if they were bad but didn’t even work half the time. Ended up buying a strong magnet and works way better since it finds the screws that hold the drywall up