Send electronic ticket together with general flight information when sending e-mails to customers. This will cut the sent e-mail number and reduse server energy usage.

Sometimes we don't need the cream and toothbrush; sometimes a pair of socks is sufficient. Being able to customize the amenity kits in advance reduces waste.

Mount small blades on the side of the wheels to make them spin by themselves before landing to reduce tyre wear upon contact with tarmac.

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

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

Solar panels to generate energy