What about something like these two(hope the links work im on mobile). http://item.mobileweb.ebay.co.uk/viewitem?itemId=121101128499&index=0&nav=SEARCH&nid=94502498528 And http://item.mobileweb.ebay.co.uk/viewitem?itemId=271168563049&index=24&nav=SEARCH&nid=67738728708 The first converter could powe...