Once upon a vacation, I was rushing to get back to my room from the lobby. It was dark, I was being attacked by mosquitoes, and needed cover ASAP. Everyone removed their flip-flops and sandals at the entrance, so there were always lonely mates waiting for their owners. I slipped on some flip-flops and raced to my bungalow. The next morning I realized I grabbed the wrong flips. I put them back, but then they sat there for days. Luckily, I found mine. I felt bad. This all could have been prevented had my flip-flops had solar energy and glowed in the dark. I present to you Havaianas "Cool" glow-in-the-dark flip-flops ($28). May each traveler be reunited with their loyal flips.