Varidesk

Best for a Quick Fix

It may not be beautiful, but the sturdy steel- and-laminate Varidesk sits on top of your current workstation and lets you toggle between sitting and standing in just a couple of seconds. A spring-loaded mechanism, operated by squeezing handles on either side, raises and lowers the whole surface – and a separate app for your computer will remind you when it's time to get off your butt. [From $275; varidesk.com]