CES 2013: Targus' new Touch Pen grants touch to non-touch screen monitors - YouTube
Dell Active Pen – PN350M | Dell USA
Amazon.com: KECOW Active Stylus Compatible for iOS&Android Touch Screen, Digital Pen for iPad,Cellphone&Tablet,Stylus Pen for iPad,MacBook/iPad Pro/Air/Mini,iPhone,Capactive Pencil for Handwriting&Drawing,Black : Cell Phones & Accessories
Convert non-touch Windows 8 machine into Touchscreen device
Touch Screen Drawing Pen Cover Non-slip Inspiration Stylus Case for Pad 5/5 Pro - Walmart.com