Carbon pricing at about $50-100 per ton of CO2. And something for methane. This could help with a switch from fossil fuel to renewables and provide money for things like reforestation. As an individual you can campaign for policies like that that are economically efficient providing the best climate outcome per dollar cost.

With solar and batteries already falling below fossil prices plus a tax on fossil fuel I'm optimistic a big change could be made without that much lifestyle cost.