Ecosia is a German search engine company which donates 80% of its revenue to planting trees. They take Bing, reskin it, and spend the profits from advertising on planting trees. They’re up to about 175,000,000 trees so far.

https://info.ecosia.org/what?_sp=c00c1905-82ee-49a9-a802-904ebfaef758

Edit: This is just a convenient way to turn something you do every day (use a search engine) into a force for good. It’s a slow process, 1 tree ≈ 45 searches, but you were going to make those searches anyway, might as well plant trees! Think of it as the digital equivalent of buying local food.