Write secret messages to your friends in the know, keep diary entries safe from prying eyes with light-coded messages, and leave invisible tags in school notebooks with this handy and affordable invisible ink pen! The pen casing is filled with invisible ink, and the thin felt tip allows you to create detailed images and messages. The pen cap contains a small UV light that allows you to reveal your messages for yourself, and to trusted confidantes. Buy a few for your friends and commence a covert correspondence or start a secret society! Makes an excellent party favor or stocking stuffer.
NOTE: This pen comes in assorted colors - depending on our current stock.
Find the hidden crystals when you open your own geodes from this fun set.
This science kit is an essential introduction to physics knowledge!
A touch of joy. A touch of science. Light responds to your touch and to the music in your room!
This microscope is so versatile you can even take it with you on a job site!
A combination of three of our great discovery toys, all in one package!
See the solar system in action!