A Bluetooth Treadmill: Two in One Folding Treadmill
Not only is the Two in One Folding Treadmill ($320, originally $560) compact enough for a small space, but it can be hooked up through Bluetooth to play music as you walk or run. It even has a powerful and quiet motor that won't disturb surrounding neighbours. One of our very own POPSUGAR editors tested it and said it was a "wintertime lifesaver."