If your sensitive skin breaks out every time it comes into contact with traditional detergents, check out Laundry Tree Soapnuts ($2-$30). These fruits (ignore the nutty name) are one of the world's oldest cleaning agents, thanks to a natural substance known as saponin. Come laundry day, just throw a few soapnuts into the included cotton drawstring bag and add it to your laundry. Then, enjoy soft, clean clothes sans that detergent-y smell and post-wash irritation. Still unsure? Try out the $2 starter kit, which contains enough reusable nuts for a few loads.