I would love to find a screw driver bit set (One handle with multiple sized/type heads) where the driver socket is the exact size of the standard case hex heads. I prefer socket to screwdriver whenever the option is available. Most of the multi-head drivers I've used have all had a driver socket that is smaller than the case screws
It probably isn't the safest thing, but I've never broken anything with this... I have a magnetic screw driver - it isn't a strong magnet, just enough to pick up screws that always fall onto other parts in the case or get stuck places. Someone else will probably say it is stupid of me to do, but I only do work on my own equipment (or my company's and everything is warrantied really well here).
Other than that, canned air and needle nose pliers