In Plus and Business on long haul - hand out amenity kits by request instead of placing them on all seats.

Implement the potential to offset carbon footprint by CDR technologies like enhanced rock weathering;

Let the captain thank the x number of passenger on board that added bio-fuel on the ticket.

Put some pressure on Swedavia to create more EV charging in the parking and use "Green Electricity" This is more of the total experience of travelling.

Give more Eurobonus point to sustainable destinations, by ranking airports and/or destination

Higher prices to reduce number of flights