Reusable boarding cards for people without phones. Like the consius travelee bag tag.

Using hydrogen tanks in the rear of the plane, for example. This could work on shorter routes such as domestic flights or intra-Europe.

Instead of serving main meals on the flight briefly after takeoff, service the meal in the boarding area. Save load, effort and waste.

Stop Printing menus for biz class, make them available on the monitor.

Granting a number of KG per year per passenger for onboard / checked-in luggage

Show country of manufacture and carbon footprint for all products in the EuroBonus Shop