Dynamic seating - people with checked in baggage should be placed towards the rear of the plane as they are more likely to have to wait anyway on arrival at destination.

Offer pre-filled reusable water bottles and collect them in before landing

When I am flexible for when to fly, I would be open to SAS selecting the actual flight, getting to fewer, fuller flights.

Do not carry tax-free goods on flights. Use as online service and if necessary in partnership with partners allowing pick-up at airports.

Present sustainability data for the flight in the infotainment system, with for instance bio-fuel stats, # meals pre-selected and how much carbon emissions was saved.

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