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.
This glass Erlenmeyer mug makes an excellent gift!
Is it a demonstration of a scientific law or a work of art?
Get one of the craziest and coolest kaleidoscopes around!
Great microscope for viewing both slides and 3D objects such as flowers, bugs, rocks and more. Includes all accessories!
The Duncan Phoenix Diabolo features a stable, hard rubber shell that retains its shape.
Build over 100 exciting electronic projects with this easy to use kit!