At the end of a long day at work, it's easier to pop an aspirin or throw on a heating pad than to figure out why you're dealing with muscle aches and pain in the first place. A bad desk chair could be to blame; they're notorious for encouraging poor posture and lower back pain. If you can't chuck the chair, slip the Kensington's SoleSaver Adjustable Footrest under your desk instead. This little add-on could do wonders to improve your circulation and reduce pressure on your spine. You can adjust the height and angle of the footrest for optimum comfort, while the non-slip design keeps your feet comfortably stable throughout the day. Available at Amazon; $14.99.