Here is a list I have formed:
-Switch to Esim
-Build more apartments
-Use shampoo/conditioner bars
-Put carbon labels on products
-Buy stuff at the store
-Eat plant based
-Prioritize transit over cars
-Switch to Ecosia
-Recycle
-Give homemade gifts
-Compost
-Be organized
-Avoid synthetic cloths
-Switch to green burials
-Buy reputable carbon credits
-Mandate microfibre filters for washing machines
-Install Linux on old computers
-Switch to Electric car -Shut down all oil operations
-Pickup litter
-Ride your bicycle instead of the car
-Adopt kids and companions instead
-Build more green spaces
-Convert animal agriculture land to wild lands
-Support repairability
-Ban private jets
The same as with any gadget: use it until it’s broken beyond repair.
That’s why I like subbing to old phone communities as everyone gives each-other support in breathing in new life to their old gadgets.