All we use now:
nail trimmers
tweezer (Just a simple eyebrow tweezer)
Blue screwdriver (Comes with many tanks now-a-days)
Personal vaporizer (used for the ohm readings)
2mm and 2.5mm drill bits
Large toolbox to hold those few essentials as well as most of our e-juice supply, kanthal etc.
Q-tips (can't forget the Q-Tips so so useful)
For us, the toolbox is the most essential, after coming home one day and finding that one of our dogs had grabbed one of the plastic juice bottles off the counter and was chewing on it while we were out. Thankfully he didn't manage to puncture the bottle (although it had some very deep k9 bite marks) but it DEFINITELY woke us up to the hazard of not putting vaping stuff away.
We have some other junk in there too but we never use it anymore, like the little butane torch and an assortment of small screwdrivers that I had originally bought thinking I'd need different sizes, various scissors, needle nose pliers, and a whole bunch of other crap that was just money spent that could have been spent better.