The Electric Optics Thumb Parallel Pack is one of our smallest EL Wire inverters. It's super thin and only takes one 2032 battery. It can easily be hidden in clothing and powers up to 1.5 feet of Electric Optics EL Wire, or 6 square inches of Parallel EL Tape. It is almost exactly the size of your thumb, so it can be stashed just about anywhere.
Takes (1) 2032 Battery (Not included), and has a toggle to switch from On/Off to Blink mode.