Learn how to juggle 3 balls.

Not only is this a lot of fun, it will also train your reflexes. It's like having a hidden superpower. The next time you are about to drop something, you'll be amazed how quickly you'll be able to reach and catch (don't try this with sharp objects, obviously).

Lots of resources available on how to start. Here's one: https://youtu.be/x2_j6kMg1co