3600 years ago natural rubber was invented: "The first use of rubber was by the Olmecs, who centuries later passed on the knowledge of natural latex from the Hevea tree in 1600 BC to the ancient Mayans. They boiled the harvested latex to make a ball for a sport." [wikipedia]
Here you can experience rubber balls in an interactive style.
Wood-carved whip tops discovered in Egypt, are aged between 2000-1400 B.C. [spintastics]. The top is one of the oldest recognizable toys found on archaeological sites. Spinning tops originated independently in cultures all over the world.
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