Welcome to the forum Scrappa2.
I scrap more PC towers than anything. My shop isn't that big and right now I have about 25 empty PC cases stacked neatly to one side. Any metal from power supplies, CD or floppy drives are put back in an empty case. Any pieces of metal that's small enough to fall through the holes including screws are put in a plastic bag and put in the case also. I have about 10 PC cases now that are full of scrap metal. They weigh between 35 and 70 pounds each and fit really nice in the back of my truck.