If you're an engineer or simply a circuit enthusiast, Circuit Scribe invented by Electroninks Incorporated is perfect for you; the product is literally a ballpoint pen that uses a conductive (a conductivity of 50-100 milliohms per square per mil) silver ink that makes drawing circuits, that much easier and that much faster.
This instantaneous system of making circuits is revolutionary, in the past, circuit pens were made from actual ink that needed to be dried for 24 hours. Circuit Scribe has completely reinvented this notion through the use of only a ballpoint pen. There is no shaking involved, no squeezing, no mess and most importantly, there's no need to wait for it to dry.
This Kickstarter project is extremely easy to use and most importantly, it's cheaper!