When we left home for college, our mother thoughtfully sent us off with one of these for our dorm decor and maintenance needs. And it still sees regular use many years later, even though we have a well-stocked toolbox and far more sophisticated multi-tools (think Leatherman).
The claw hammer handle unscrews to reveal two phillips head and two flat head screwdrivers, in descending sizes. We use the hammer when we're dealing with a delicate surface, and the screw drivers end up coming in handy, since we're usually building something from IKEA or hanging artwork.
By Gamm tools for about $6.