Feast your eyes upon the simple yet elegant toy, La Spirale. A minimalistic and elegant spinning top that is composed of spirals. However it is more than meets the eyes. When you spin the top, the difference in thickness and the merger of 2 spirals into one spiral, causing the toy to be a Bistable Optical Illusion. Some observers initially see the top spinning clockwise and some anti-clockwise. Additionally, some may see the top suddenly spin in the opposite direction.
You can download the .stl file from the link together with 2 animated simulation views of how La Spirale will look like when it is spinning.
Take a break, spin the top and immerse yourself in the hypnotic and illusionary display of La Spirale, watch as all your worries spin away.