A gadget that i think is very cool are hoverboards, i do own one myself and i like it. I don't use it that often since it's more for fun/entertainment than as practical transportation method. If i need to go somewhere i drive by car. I sometimes use my hoverboard to ride in my parking lot at home but not often because i don't have that much time. They are not that expensive, you can get one for 100-200 dollar on amazon: https://amzn.to/2sLAgMO
Kids like them 2, where i live all the kids drive hoverboards instead of skateboards.
