My wife likes to fill spaces. We need this, we need that. I am the kind of person who doesn’t like to get rid of something I feel like I might use later. We both occasionally go through and just chuck a bunch of stuff. I like to be really organized about certain things, and those spaces I am not a hoarder about.
I use my extra screws and nails. It has saved me trips to the store and a lot of frustration. I also have a box of random wood scraps. I use those all the time, too. Props for holiday decorations, securing furniture to the wall, weights to hold down tarps/plastic sheets.