The Power Tank 17 portable rechargeable power supply is designed to let you juice up your funky Celestron telescope wherever you happen to be nebula-gazing, but we’re wondering why you can’t use it for other…well…less starry eyed purposes. It’s got oodles of on-board toys, like FM radio, siren, integral removable flashlight, emergency Halogen spotlight, and even some jump start leads to fire up yer jalopy in an emergency. $105.00.