If you’re in IT, the need for small Phillips and Flat screwdrivers is common. Megapro, which makes the recently reviewed Megapro Stainless 15-in-1 Driver, also makes a handy and inexpensive Pocket Driver.
The bits cover two sizes for both Phillips and Flat head. The bits are well made. The handle is comfortable, just big enough for the job, while not being too big for a shirt pocket. The caps snap over each other, so you can put them on the tool when removing them and are less likely to leave them behind. The caps also rotate smoothly, making it easy to apply pressure with the palm of the hand while twisting with the fingers. The holes in the sides of the cap let you check which bit is in which end of the tool. There’s a clip for putting in your shirt picket. I bought five so that I could hand them out to co-workers so they would be less likely to steal mine!
There are some negative reviews on Amazon, but I suspect the reviewers were attempting to use the tool for too large a job. These are not made for bigger screws that have high torque, but rather for working on notebooks, digital cameras, etc. They don’t replace a proper toolkit for doing a lot of that sort of work, but for something small to carry around they do the trick.