diy metal backsplash. I made the backsplash out of galvanized aluminum flashing from Lowes. This usually goes underneath roof shingles, but here it let me put hooks. I used heavy wire cutters. The metal isn't very heavy, so anything that cuts wire should probably work. I drew guidelines with marker to help - cutting that stuff is tricky. You do have to be really careful - I would lay a towel or sheet down underneath as you cut, because little shavings of sharp metal splinter off.