I whitewater kayak, so I have two places I store gear.
#1 Very nice elevated wood shed in the back yard. Kayak, paddles, all kayak gear, bicycle, 18 tanks, gear bags, any dive gear I don't use anymore. It's a large shed with excellent shelves and a loft. Shelves on one side hold Rubbermaid bins of misc household stuff and drawer bins hold misc gear for kayaking or diving. The loft has home stuff....Christmas tree, fans, etc.
#2 Scuba closet under the stairs, entry off garage. This area is part of the house and has very little temperature change. In this area, very narrow, but long, I hung 3 rods going across the narrow area, from front to back (like rungs of a ladder). In the back I have 3 of those square garment canvas bag/storage hanging wardrobes from Bed, Bath and Beyond hanging abreast of each other....fit perfectly side by side. In those are skins, wetsuits, rash guards, etc. On the next two rods I have 1 hanging garment/wardrobe each. In one is all my long underwear for my drysuit, in the second is my drysuit. These are on the rods by themselves so I can slide them from side to side to access the furthest rod back, etc. On the spare space on the rods that only have one wardrobe are my kayaking PFD, backplates, Transpac, and several wings. These are all hanging on hefty hangers and can me moved from side to side as needed. I also put heavy duty coat hooks on to the horizontal boards screwed to the walls that hold the rods. On these hooks I hang drysuit boots and regulator bags, etc. Under the wardrobes are a few more Rubbermaid bins to catch miscellaneous stuff that is seldom used, on top of these lay flat my fins. On top of the boards that hold the rods are flat sections of pressed board to make a shelf going back about half the length of the room. Up top is a bin with all my PADI teaching materials, and in front of that are several zippered canvas garment "boxes" that match the hanging wardrobes. In these are hoods, wet suits gloves, dry gloves, insert gloves, all the little stuff. Lastly, on the floor is a separated open heavy duty handled tool box with lead.
