For years, science fiction tales have been describing the wonders of robotics: machines designed to help us with every task imaginable, with artificial intelligence to learn and change, making our lives simpler and more enjoyable. These Walkie Bits robots will free you from the annoying and cumbersome task of, uh, walking across a tabletop to a simple rhythm. You can tap a pattern of up to 15 beats on their shell, and they'll walk following that pattern. Hooray! Truly, the future of robotics is in tiny plastic turtles. $29 USD.