Remember this LEGO BB-8 set? It is a wonderful building kit with over 1100 pieces that lets you build a BB-8 with a wheel-activated rotating head and realistic detailing. The good people at Brown Dog Gadgets have taken it to the next level by making it motorized. The head spin is now automated. Sound and light effects were also added.
You are going to need a 9G continuous rotation servo, Crazy Circuits LED chips, YX5300 MP3 player module, and a few other simple parts to complete this.