Goodsearch is awesome.
It’s a search engine like Google or Bing. It lets you choose a cause, and every time you do a search, your registered 501c3 cause (also has local schools, worship centers, and scout troops) gets about a penny of advertising.
It costs the nonprofit nothing. It costs you nothing. It raises money for a worthy cause.
If you’re not using it right now, please do. There is no reason not to make the world a better place.