In Scandi all tap water is great. Sell SAS water bottles onboard which are made to be reused = able to buy for points, pre-order as well. And then load tap water onboard.

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

Option to make a plant a tree donation. By having a partnership with a existing tree planting project.

Sell biofuel to companies in bulk to lower their CO2 emissions and fast track the green transition. This would simply corporate action and speed up climate transition.

Magazines and security and safety papers, is put on the sas app or screen only for long hauls to save paper

Create an ability to share a seat in your car with other passengers on the flight. It's better than everyone riding their car.