One really good way to make change without actually doing anything is to help other, more dedicated people do it for you. One of the ways to do that is by adding your name to petitions like this one:
Mizzou, Stop Funding Fossil Fuel
And this one, for example:
Enterprise, Stop Funding ALEC
In the meantime, you might learn things like which companies to avoid supporting with your hard-earned dollars. In the case directly above, the rental car company, Enterprise, is suggested to be in cahoots with a mysterious organization called the American Legislative Exchange Council that, pending further review, also appears to be evil. The one hosted at this web address kindly asks the University of Missouri System to stop funding fossil fuels.
Don't be deceived. Every voice is a voice.