A few years ago, Circuit Scribe launched a kickstarter campaign to fund their revolutionary circuit scribe pen. Today, their pens are available via retail! What is Circuit Scribe you ask? It is a pen that can draw circuits on paper. The ink in the pen can conduct electricity and once it's on paper it dries quickly. This allows the user to create some cool and intricate electrical projects. Check out the video below which explains the pen and shows what types of things you can build with it. This is something every classroom needs!