I start composting organic waste. Several options are available to me: neighbourhood compost, throw my compost or vermicompost (terrace), use orange bags.
I buy clothes second-hand or in ethical and responsible fashion stores (slow fashion).
I use a lid to cook food and choose a pan size that fits the cooking plate.
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 prefer a shower (max 5 minutes) to a bath. If I like baths, I limit myself to 1 bath a month.
I opt for local tourism on a small scale, with locals or camping.
I replace one portion of red meat with one portion of white meat per week.
I use rechargeable batteries.
I install thick shutters or curtains in heated rooms and close them at night or when I leave my home.
I maintain my car and check my tire pressure regularly.
I avoid using the microwave to thaw food.
I wrap my gifts in beautiful fabrics instead of paper packaging.
I place heat-reflecting panels behind my radiators.
I make my own fries and prepare my own homemade mayonnaise.
To travel on a city trip, I prefer the train if possible. If I fly, I compensate my flights.