Yoyo

I'm sure all that you are all familiar with the yoyo as a toy, but did you know that it was used by pre-hispanic Filipinos as a weapon? Of course, yoyos back then were not made of plastic and wood; they were made of heavier stuff like metal, and they were heavier and larger, so one blow from a yoyo could be fatal.
In the past, the yoyo was not able to do tricks such as walk the dog, the loop and etc.. It could only do up and down motions. That wasn't much fun, was it?

Pedro Flores thought the same way too. He wasn't content with the way yoyos just keep rolling down and then roll back up. He decided to make it more interesting. Instead of knotting the ring inside the yoyo, he made a loop with the axes in it, and then twisted the strings. This enabled the yoyo to stay in place while spinning, and thus, "walking the dog" became a walk in the park. It was patented the Flores YoYo, but it was bought by a foreign company. But it did give the Philippines the distinction of inventing one of the most loved toys of children and adults the world over.