Summer just got a lot easier for the flip-flop-loving gal. Gone are the days of toting around different pairs of flops for work and play. Twenty-three-year-old Lindsay Phillips has invented Switchflops [2], a clever flop with an interchangeable Velcro strap. Go to work in a striped grosgrain, and come home wearing a white crochet ribbon strap. Switchflops offer three shoe styles--kitten heel, wedge, and flat--and more than 50 strap designs, meaning endless possibilities for summer fashion. Available at several Colorado stores, including Stacy's Hallmark, 2730 S. Colorado Blvd., 303-504-0289. $32-$37, $10 for each additional strap