I replace my bulbs with LEDs or compact fluorescents
I install thermostatic valves on my radiators and set them to max. 3.
I install thick shutters or curtains in heated rooms and close them at night or when I leave my home.
I have my mobile phone repaired rather than discarded.
I don't use disposable dishes when I eat outdoors.
I turn off the heating when I ventilate the rooms/rooms.
Be careful to open the windows wide for 5 minutes instead of tilt and turn window all day long!
I make my own Christmas decorations (origami, cotton, cut-outs) rather than buy them and I choose LED Christmas lights.
I replace one portion of red meat with one portion of white meat per week.
I avoid using the microwave to thaw food.
I buy fruits and vegetables in bulk and without packaging.
I avoid air conditioning as much as possible (if I am too hot I hang a damp sheet on my window to cool the room. If that's not enough, then I prefer the fan.)
I replace my shower head with a water-saving head / I install a flow limiter on my faucets.
I make my own fries and prepare my own homemade mayonnaise.
I regularly defrost my freezer (every 6 months).
To travel on a city trip, I prefer the train if possible. If I fly, I compensate my flights.