Get a chest freezer. It's much more efficient for long-term storage than an upright fridge with a freezer because the cold air doesn't spill out when you open it.

Toss your incandescent and fluorescent lights. Get LED bulbs (not smart lights, just white LEDs). Where applicable, install timer switches.

Fuck cars, get a bike. A simple, sturdy one, like an onafiets. They run on toast and determination.

Understand the difference between having enough money to buy something and being able to afford something.

Unsubscribe from music/video streaming services. Return to the seven seas.

Maybe engage in some light tax evasion.