I'm contemplating a tools section for the ASCArmoury.
Section containing hex key sets, hammer punches (so much better than belting a hex key with a mag), and specialized pliers I've found particularly useful in airsoft repair. I'm also collecting various fasteners and orings. I could even carry a few helicoil sets. Unfortunately they're not cheap. Inserts cost a buck or two each and the tap usually runs around $15 from tool suppliers.
One thing I really want to do is get some custom punches made. I'm thinking of steel punches with nylon tips so you have a punch stiff enough to bash out most pins with a soft tip which doesn't scratch off the blueing on your black pins.
Want nearly free GBB gas?