I put up a little frame lean to with metal sides, no heat to house me an office, leather working, some other manly stuff. My wife had a big upright metal storage cabinet like used in offices. I plan to store my leather ( now in living room floor), unused holsters, etc. I am in a very humid climate. Should I put a light bulb or a gun safe dehumidifier in the cabinet to avoid mold? Don’t want it so hot it will dry out or damage leather. I use light bulbs in my welding rod storage but about all you can get now is led or halogen which produce little heat. I have some old style bulbs bought up but will finally run out.