The world's first day-spa owner invited clients to "experience the healing powers of this here tar pit," which was bad news for the clientele but invaluable for modern-day archeologists. Preserve well-being without becoming permanently preserved with today's Groupon: for $20, you get a Peek-a-Boo manicure and pedicure at Peek-a-Boo Waxing Boutique & Salon in Vista (a $40 value).

Peek-a-Boo's professional phalange buffers cosset fingers and toes with a variety of soothing treatments. The salon's signature mani-pedi shape shifts all 20 shields with a detailed file and buff, preparing hands and feet for stylish dragon slaying. Then technicians frost finger cakes with a precision polish. A massage rewards hands and feet for their diligent and dexterous work during full-body cat's-cradle competitions, punctuating each service with a circulation-improving sendoff.