Guess the shot

Back in civilization, Sydney no less! Our generous hosts provided a perfect place for us to go checking out the city, gather our stuff from the rental into a more-or-less airplane-ready state and of course provide with us with some really good company (and food. and a place too sleep).

To thank them we left all sorts of magnificent gifts, like small gas tanks, camping chairs, plastic bags, cooling bags, their own towels (dirty from our camping trip), used-up sunscreen, left-over food, etc etc. Yes, aren't we the thankful persons :)

So have you guessed yet what it is?