For my every day supplies I have a chrome NSF wire shelf. It's got the food, nets,tongs, scissors, meds, testing stuff and some misc stuff.
Any unused (used or new) supplies like HOB, filter media, wood, rocks, lights, air pumps/tubing/stones...etc. Goes into plastic bins on the other side of the basement. Even have some heavy duty Lifeguard pumps for the Matten filters we had set up on the 120 and 125 in the last house. The stuff has come in handy in emergencies.