Tie-ins that go hand in hand with AirBnb

Hi there,

Do any of you promote additional tie-ins along with your room. For example I share my Uber promo code and also give out free simcards for my network. For both of these the ‘new user’ (ie guest) gets a discount and I get a kickback. It’s win-win! Is there anything else I am missing out upon?

I’m also interested in other things that I don’t get a kickback from, for example do any of you leave an unlocked phone, or an empty travelcard for use?

Thanks!