The price range of these has me wondering if I should start taking my racing drone battery straps \(RJX Hobby 300mm ones run $1.20\) and running them in pairs. Same non-slip silicone coating, they're actually fairly tough, comes in a kevlar reinforced variant, and with arguably better color options. Did I mention the price?
The other part is that old MOLLE tactical gear \(varying quality ranges will do\) can be similarly attached... 550cord does wonders as well, if you're a captain of tying knots. That said, I currently make do with an old Ares Gear fanny pack that holds my pump, tube, FAK, tire levers, phone, patch kit, multitool, spare link, tape rolls, and housekey.