Three things
Here are 3
Nothing matched all three, so where you will be was set aside. These still match who it is for.
Take one regular journey off the car
Not driving less in general. One specific trip you make every week, done another way, permanently.
Half an hourFreeThe planet
Give it away while it still works
Not when you have finished with it and it is nearly dead. Now, while somebody would actually want it.
Half an hourFreeThe planet
Refill the one thing you keep rebuying
Pick a single household item and stop buying new packaging for it. One item, permanently, beats a good fortnight.
Half an hourUnder $10The planet