I'd like to project content from my phone or computer to the TV in my stateroom. Is there a shop on board, or in port, that sells cables and possibly converters? Of course I have lots at home, but might splurge on one to enjoy on the cruise if I can track down such a thing. Doubting I can "borrow" one from staff. Or borrow from a fellow cruiser (we're sailing right now, departed on the 26th) (where on here to ask?). Thank you!