Mood rings were invented in 1967 by a man named Marvin Wernick, who saw a great idea for a toy when he saw one of his friends take a child's temperature by using a strip of thermotropic material. A mood ring is essentially a liquid thermometer that changes color according to the temperature on the wearer's skin. It is thought that this may indicate the mood of the wearer, as some claim that body heat fluctuates with the emotional state of the wearer. Highly recommended when trying to find out what your loved one is really feeling--or if you need a small but neat stocking stuffer, gag gift or novelty toy!
Note: Ring comes in a variety of sizes. Although we do try to accommodate requests for specific sizes, we cannot guarantee which size will be sent to customer.
Warning: Choking hazard due to small parts. Not for children under 3 years old.
The Duncan Phoenix Diabolo features a stable, hard rubber shell that retains its shape.
This black scorpion specimen is great for the classroom setting!
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!
Infiniview comes with a 3.5" LCD screen and rechargeable Lithium Ion battery that will last up to 2 hours in the field.
See the constellations visible in the Northern Hemisphere on this watch!
This smaller transportable Van de Graaff Generator will easily fit in any classroom!