I carry a Skeletool with Carbide Glass Breaker Bit in my pocket for almost a decade.

Then, I have a leather pouch in my bagpack with a Leatherman Wave, a set of Bits, a pencil and a Knipex KNIPEX Cobra.

I absolutely love it. Also, people underestimate the problems that can be solved with it.

 

 Those baby knipex are great!