Hemp also grows easily and with far less resource-intensive farming methods than cotton, which explains why it has become such a popular textile fiber among the eco-conscious. These cheerful knit cloths look sunny, but they’re tough stuff, and they’ll work wonders on rough heels and elbows. Start your day clean from head to toe — conscience included. We found them at our local natural grocery, but you can order them for $8 apiece from www.hempengoods.com. Grab an extra one for the gym bag to revive yourself after a tough workout.