A Baseball
Did you know that a cork sat at the very center of an everyday baseball? It's true! The other layers are various forms of rubber and cotton that help give the ball its distinctive feel and weight. After all, you can't get that "thwack" of a baseball bat against any other type of ball, now could you?
Plane Engine
There's nothing plain about this plane engine. It's anything but! There are more than enough little details that go into this machine, but the end result is the miracle of flight. Without this strange-looking mechanism, you would never be able to travel the globe.
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