I was at the auto parts store the other day and I got myself a locking gas cap & a pressure relief radiator cap for $20.. So far they are my 2 favorite mods!! The gas cap will keep gas from getting stolen as prices rise, until they just cut the filler hose and siphon it from there :( and the pressure relief radiator cap has already saved me some time because I have been working on my cooling system..

Two cheap mods I recommend to everyone!