Working on your own most of the time, anything that you can do to increase your productivity is a good thing. Generally I love tools that can do more than one thing to reduce the weight of my bag, by carrying less, these tools are excellent productivity boosters.
Punch down tools
ICC has a punch down tool that will punch down 8 pairs at a time on a patch panel, as well as a tool that will punch all 8 pairs on CAT5 insert jacks (including HD, High Density jacks)
Wiremapping and testing tool.
Klein tools has a wiremap tool with multiple "remotes" so that you can label jacks faster. This tool will also test that wiring is terminated properly, and measure cable length.