A cool tool can be any book, gadget, software, video, map, hardware, material, or website that is tried and true. All reviews on this site are written by readers who have actually used the tool and others like it. Items can be either old or new as long as they are wonderful. We post things we like and ignore the rest. Suggestions for tools much better than what is recommended here are always wanted.
Dogbone WrenchI've used this dogbone wrench for three years. Keep it in my desk and use it much more frequently than my socket set. I always have the right size wrench handy in a single tool, and it rotates, so it functions more like a socket than a crescent wrench.