Nail polish was invented around 3000 BC in ancient China—a fact that's doubly remarkable considering that human toenails were only invented last year. Celebrate this admirable foresight with today’s Groupon: for $15, you get a spa pedicure at Diamond Nails & Spa (a $30 value).

Diamond Nails & Spa's amiable staff of doting detailers wields an arsenal of pampering techniques, bolstering fading toe façades within a sunny, digital paradise. The spa pedicure begins with a relaxing massage of the neck, back, and shoulders, soothing tired muscles and roundhouse kicking stress in the face. Then, nail technicians treat feet to a choice of colored polish, gifting toe tips durability, vibrancy, and matching uniforms. Upgrades, such as artful French tips ($5 with service) or paraffin dips ($10), are available upon request.