what do i need?
a yoyo and a counterweight. For the cw, you can take 2 normal 6 sided dice and drill a hole through the center. Or a rubber ball. Or a lot of toy stores will sell some duncan yoyos with an official cw in the packaging that you can use.
Toys r us!
Like dynikus said, a lot of Duncans come with a counter weight. If you don’t lready have an FHZ those come with like three I think. And it is an okay throw.