In the world of desktop toys, this one is certainly the most beautiful--mathematically, that is. That's because it's based on the Fibonacci sequence, the alluring "golden spiral" that denotes beauty in nature. At first glance, this piece is just a metal sculpture, but give the handles a twist and watch as each angular "wave" undulates in a million different hypnotic ways. Carefully made for precise, elegant movements, this interactive work of art will provide a soothing respite for an overworked mind. You can even remove it from the stand to feel its mesmerizing effects anywhere you'd like. Designed in the UK. Handmade in Italy.