What kind of bag do you carry?

Network engineers, technicians, cable installers and all other workers who build, manage and troubleshoot large network infrastructures, what kind of bag and tools do you carry with you into the field?

I'm looking to put together a new toolkit along with a way to conveniently carry most of this equipment from site to site. I'm interested in hearing how most of you make the tools you need into more of a convenience and less of a hassle.

Some of the equipment I find necessary to have on hand most of the time.

• cat6 patch cables of various lengths

• cat5 and 6 cable ends

• rj11 patch cables

• rj11 cable ends

• crimping tool

• punch down tool

• multi-bit screwdriver

• side cutters

• wire strippers

• couplers

• battery tester

• cable and fiber tester

• S and MM fiber patch cables

• label maker

• Small form factor laptop with ethernet and serial or an adapter for both. Currently I use a mac Air for this but would like something smaller and lighter and at least this powerful.

• other miscellaneous tools

It would be nice if there were some convenient to carry bag for all of this. What do you do in this situation?