Turning expired milk into farmers' cheese and farmers cheese into syrniki
imgur.com
Discover the magic of the internet at Imgur, a community powered entertainment destination. Lift your spirits with funny jokes, trending memes, entertaining gifs, inspiring stories, viral videos, and so much more from users.

I could probably also post this to zerowaste, but I think food seems like a good fit. This is about as easy and low-risk as making cheese gets, and a great way to use up expired milk!