One thing I would definitely invest in is the solid brass caps with rubber gaskets inside. You can buy them on Amazon (etc) and they screw on to the 1 lb propane bottles to protect the threads and prevent slow/small leaks. I have been using them for years on my small bottles, after discovering that small leaks are common from store-bought (commercially filled) bottles – which led to a near-disaster in my garage once. With the caps, no leaks, and no worries about damaging the threads while transporting the bottles. You can superglue a magnet on the top of the flat brass cap, so you can store the cap ON the bottle itself while in use (no looking around for the cap when you remove the half-empty bottle from your camp stove later, etc).