Allow users to visualise their travel carbon footprint in-app. Include everything such as transportation to/from the home and destination, hotels.

Not handing out napkins under every drink.

SAS uniforms from sustainable, ecofriendly, and recycled materials made ethically

Cut the knives and fork in the breakfast box, we only need spoon for yoghurt. There's no need for one glass per item

Dedicated recycling bins in galley/ head for passengers to use during non-service times

Giving an incentive and getting more passengers to travel light should reduce aircraft loading and fuel consumption. Alternatively allow more cargo.