There’s a good chance that a true tool nut already has every DIY gizmo out there—except this! The ryoba saw has been used in Japan for years for cutting wood. This modern update has 17 teeth per inch on its crosscutting side and 6 teeth per inch on the rip side. Plus, with a .5-millimeter blade, it makes a superfine cut, or kerf. Available on Amazon; $26.21.