What needs to be done with junk mail

Why not send pictures of people laughing as they eat salads.

Does the USPS even pick it up?

Thats Just punishing the person who picks up your mail.

This is an asshole thing to do
Unless you have a "No Junkmail" sticker.
In which case they're the assholes and you're just returning the favour.

Fill the envelope with glitter instead. Don't be a douche to your mail person.

Was browsing posts from a year ago, and saw this exact post.
That was 15 minutes ago, not even mad only impressed.