About this 3D model
The pumpkin in this model is from the Google SketchUp 3D Warehouse http://sketchup.google.com/3dwarehouse/details?mid=d3265d181a53f0b7430abaf6b9d4cf51 The design is for a pumpkin lantern. Any 3 volt coin cell battery would work for the battery I just chose the cr2032.