Hario Cold Water Coffee Dripper
Credit: Photograph by Michael Pirrocco

This Japanese machine slowly filters water through the grounds and into a glass decanter. Carmichael found that it produces a fine concentrate, but needs to be on a perfectly level surface to soak all the grounds. With its undersized stand and top-heavy design, it's precarious; if you have kids or cats, steer clear. [$265; surlatable.com]