We've all been there at some point, you've got a perfectly functional Ethernet cord that somewhere along the line had its tab broken off. Don't buy a new one or re-terminate the cord. Fix it with zip ties.
While we're no stranger making our own Ethernet cables—you can probably find a few RJ-45 connectors hanging out with the dust bunnies under our work bench—sometimes it's not convenient or you don't have the tools to strip an Ethernet cable, strip and reposition the pairs, and re-terminate it. It's an even bigger annoyance when the only reason you find yourself having to do it is a missing plastic tab on the connector plug.
Over at the ever-growing tutorial blog Instructables they have a tutorial on how to fix a broken RJ-45 connector using two zip ties, a razor knife, and a pair of pliers—although if you're going full MacGyver you could skip the pliers. When you're done you'll have a functional tab on your Ethernet cable. Check out the full tutorial at the link below and if you have your own clever use for zip ties or other inexpensive tools—duct tape anyone?—we want to hear about it in the comments.
Repair a Broken Ethernet Plug [Instructables]