There is a photo contest by @friendlymoose called POBphotocontest.
Every week on Sunday a new round starts and the motto is announced.
To participate, you have to publish a post according to the theme, then leave a comment and a link in the contestpost and use the tag #pobphotocontest.
There are POB tokens to be won, which will be distributed as rewards for the published post.
Also @good-karma has donated Ecency points for the winners.
So it's worth joining in there.
This week's theme is green and here is my contribution.
Well, green tiles and a toilet. This is part of our old flat. Just nice and green.