Tbh I just download a rake of stuff onto my tablet. I’ve got Netflix/Sky Q/iPlayer etc so between them I can g3t a good few bits to watch bearing in mind if I’m parked for 11 hours about 7 of those are spent sleeping so there’s only a few hours to fill, of which I don’t spend all them in a cab.
As for answering the call of nature, pee bottle. If it’s a turd I empty my bowels during work time.