Reusable coffee cups for take away coffee and in-flight.

Use larger packages for the most consumed drinks, instead of handing out endless amounts of cans (less garbage, less weight on board) .

Add green flights on some departures. nothing is served on these flights, only hand luggage is allowed, but you earn more Eurobonus points if you choose such a departure.

Even if you have a few seats in business. The planes will be filled as usual while providing better service with almost no additional carbon footprint.

Make a “code-share” cooperation with train providers, to allow for booking a ticket from A to B with combined train-plane modality and same benefits as connecting flight

Badges in app after booking bio ticket or SAF add on - driving positive recognition and repetition