Amazon.com: BoxWave Stylus Pen Compatible with Nvidia Shield Tablet X1 (Stylus Pen by BoxWave) - EverTouch Capacitive Stylus, Fiber Tip Capacitive Stylus Pen for Nvidia Shield Tablet X1 - Jet Black :
Amazon.com: Navitech Grey Fine Point Digital Active Stylus Pen Compatible with Google Nexus 9 / Nokia N1 / Nvidia Shield/Tesco Hudl 2 / EE Harrier Tab : Cell Phones & Accessories