How about making a personalised Sparkfun pocket screwdriver like these http://www.pocketscrewdrivers.com/products.htm . I always carry a small terminal strip screwdriver on me at work for faultfinding and equipment mods. Having one that is both a standard blade and phillips head in one would mean i only need to carry one screwdriver. great little promo piece too.
That would be a useful tool and great advertising item. I am still using the screwdrivers I’ve gotten from trade shows years ago. My favorite is the one with a straight blade on one end, and a Phillips on the other. I use that one a lot more than the straight edge and magnet on the other side.