Free the Ocean
I recently discovered a website called Free the Ocean, which will remove a piece of plastic from the ocean every time a user answers the daily trivia question. Free the Ocean is able to do this because of support from its advertisers. As it only takes about 30 seconds to answer a trivia question, I've been participating every day. So far I've "helped" remove four pieces of plastic and I'm at the Starfish level. Anywaaaaaay, it's a fun and painless way to help with the plastic issue, so I thought I'd spread the word. :-)
Crossposted at https://rusty-armour.dreamwidth.org/183293.html