2-PACK - KENDAMA TOY CO. - The Best Pocket Kendama For Tons Of Fun (not full size) - Fancy Colors: Black/Silver and Black/Gold - Solid Wood - A Tool To Create Better Hand And Eye Coordination

Kendama is a Japanese wooden toy used since the 1700's for increasing Hand/Eye Coordination, as well as Reflex and Balance.
*Kendama is a traditional Japanese toy consisting of a ken (sword) and tama (ball) connected by a string. The ken has three cups and a spike which fits into the hole in the ball. Basic kendama tricks consist of catching the ball in the cups and on the spike, however a huge variety of kendama tricks can be performed by juggling the ball between the cups, balancing it in various positions on the ken, balancing the ken on the ball and juggling the kendama.
Kendama bears similarities to the classic cup-and-ball game, and the Hispanic world toy known as boliche or balero. The principle of these toys are the same: catching one object with another, where both are joined by a string. However the modern kendama style takes influences from a diverse range of skills including yo-yo, diabolo, juggling and dance.
*Wikipedia