🤖 How cool is this 👉🏼 https://robohash.org/

Robohash is a easy web service that makes it easy to provide unique, robot/alien/monster/whatever images for any text. Put in any text, such as IP address, email, filename, userid, or whatever else you like, and get back a pretty image for your site.

Yep. Pretty cool. Definitely beats the gravatar auto generator