Some lean forward to edit or handwrite. I lean back. This light plywood surface (with elastic paper holders) propped on the tiltback chair arms serves admirably as a work surface and then stows easily.
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.