13 in 1 Compact Screwdriver Set

I'm always on the lookout for good practical tools. This one caught my eye as a handy tool to keep in the car or flight box. 

In a small package you get a nice little ratcheting screwdriver. You can adjust how deep the bits sink into the handle. And you get a handy magnetizer/demagnetizer to allow you to hold onto screws or not. And the hidden feature, if you need extra torque, you can slip a bit into the handle to add more power.