Chinese Jacks!
These are nostalgic toys from the ‘80s I couldn’t find them anywhere online so I modeled it.
The way we played Chinese Jacks was a balancing game. You started with one Jack in your hand (palm up) and threw the Jack in the air. The object was to catch the Jack on the back of your hand. If you caught it, you would add one more Jack to your hand and throw both Jacks up. This went until you dropped a Jack.