Techies and DIYers everywhere owe themselves a subscription to the free e-mail newsletter, Cool Tools. Maintained by author, videographer and dyed-in-the-wool DIYer Kevin Kelly, this site is truly fantastic. According to Kelly, a cool tool can be 'any book, gadget, software, video, map, hardware, material, or website that is tried and true.' He is constantly searching for extraordinary items that are fascinating, reliable and better than their counterparts. And he welcomes suggestions from readers. In fact, you'll have to submit a cool tool in order to get the newsletter. (OK, so it's almost free). Spend a few minutes on this Web site and you'll be on your way to publishing your own books, owning the world's most unflippable umbrella, finding the best swimming holes in the desert, making your own tapestries, getting over writer's block, soldering pipes, making easy work of moving furniture … Seriously, check it out!