It doesn't get much slimmer or sleeker than SATA's pen-style screwdriver, which can easily and discreetly be carried in a pocket or bag so you always have it when the need arises. The thinness of the 'pen' body also allows it to be used in more confined spaces than a typical driver

It comes with 24 interchangeable bits, including a few relatively uncommon ones:

• PH000
• PH00
• PH0
• PH1
• PH2
• SL1.5
• SL2.0
• SL3.0
• SL4.0
• P2
• P5
• T2
• T3
• T4
• T5H
• T6H
• T8H
• T10H
• T15H
• H1.5
• H2.0
• U2.6
• Y1
• Delta 2.3

All of these bits fit into an included carry case, and they're easy to swap out at will.

Get the kit for $19 on Amazon.