Does the scene above look familiar? Whether you're working with power tools or just trying to lug your vacuum down the stairs, it seems like extension cords were designed to come apart with the slightest pull when you most need them. But luckily, there's a ridiculously easy fix: an overhand knot. You already know how to do that one!
If you want to use it to keep your gear plugged in an extension cord, just hold both ends together and tie a loose knot. Then, plug them together.
This technique not only keeps cords together, but it also reduces strain on the plugs, which means your cords will last longer and perform better. The Concord Carpenter even says he raises and lowers his tools from ladders by holding on to just the cords.
(Images: Robert Robillard)