Jeb48

Not really your whole solution. I keep most of mine just stacked on a shelf or in ammo cans but the ones I really want access to - I have several of these clips hanging from the bottom of safe shelves. https://www.amazon.com/gp/product/B094ND6J9N/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 My wife also made me pouches that attach to the inside of my gun safe for magazines. I like to keep 3 to 5 magazines for each of my guns hanging close to where I store the gun.

100LE AvGas is expensive but has a shelf life of 10+ years without additives. I try to keep 6-10 Gallons on hand and another 5 or so gallons of alcohol free gas that I add additives to. In our area many places carry alcohol free gas at a lower price than AvGas. Most smaller airports will sell you AvGas. Even though AvGas its 100 octane it burns fine in small engines and older engines, I run it in my Honda generator and chainsaw (with oil added), I use to ruin it in my 1949 8N tractor till I moved where corn free gas was easier to get. Since it has lead added don't use it in anything that has a catalytic converter.