* Multifamily housing is much more energy efficient. Is it legal to build throughout your city, or does zoning prevent it?
* Is there good bicycle infrastructure so people don't have to drive for everything?
* Does your city still have expensive parking mandates that lock in car dependency? Get rid of those. They also get in the way of places becoming more walkable.
* This one hurts, but: eat less beef.
* Advocate for good transit as another way for people to get around without driving a personal vehicle.
* What can be done in your city/region to electrify heating for homes and businesses?
* What can your region do to build more renewable energy capacity?
Those are all things where even a few voices can sometimes make a difference.