Shulk Sword With Lighted Monado

My son decided he wanted to dress as Shulk for Halloween. If you don't know what that is (I didn't), then you probably don't need to make this. The centerpiece of the costume is Shulk's sword. It's huge. I made it out of a 2 foot by 2 foot by 1 inch insulation foam board from Home Depot. I'll include pictures of the finished product later. It turned out good enough to impress an 11 year old. So, I'm qualifying this as a success. But, the lit power symbol in the center of the sword was beyond my ability to carve. So, I decided to model and print it. The lights are just a short string of battery powered white or blue Christmas lights. They are coiled up inside of the cover which is then friction fitted into the speed symbol. The whole thing is friction fitted into a circular hole in the sword. The battery pack is taped to the exterior of the sword. This will make better sense once I upload pictures. But, I wanted to get this online, because buying a sword that doesn't look