A logical add-on to the Inventor-Bot is a feature to shoot the little colored balls at an intruder. This image shows the ball clip added on to the Inventor-Bot.
Photo of Laurens Valk's model by Wally Bahny for TechRepublic
For more about the book, read my Geekend post Geek Gifts 2011: The Unofficial LEGO Mindstorms NXT 2.0 Inventor's Guide.







