Have a separate bin to put old baggage tags and recycle them. Not together with ordinary waste.

Ensure correct recycling of plastics by unwrapping meals and plastic protected crisp breads before handing to the customer.

If more people could eat the same food, there would be less food waste and more happy customers.

Invite all travellers to bring their own coffee cup.

Stand up seats for shorter flights.

Make the app as lightweight as possible. Remove images, animations and leave only the bare necessities. This saves data transfer and storage - which in turn saves energy.