Westminster Inc provide various toys, gifts, and novelties.
You can learn more about them here:
Battery powered lamp, blue.
Remote control flying saucer.
13" translucent groovy motion lamp
Glass-enclosed liquid and air, small changes in heat causes air pressure to move liquid.
9" battery operated lamp
Demonstrate physics with this classic desk toy!
5 Inch Viscosity Desk Toy
Sand flow between layers.
Handheld electronic sound effects