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Drinking Lucky Bird
Drinking Lucky Bird works using properties of thermodynamics, converting thermal energy into mechani..
Ex Tax: $12.90
Galileo Liquid Thermometer
This unique cylinder gauge measures temperature with colorful, floating spheres.  It is based o..
Ex Tax: $22.90
Spiral Hand Boiler
Simply hold the large bulb end in the palm of your hand and within minutes, your body heat will caus..
Ex Tax: $7.90