This is the Pile of Poo Emoji (U+1F4A9) by DrLex but I added a Keyring Hole/Loop. Requires no additional setup or supports as the hole is inset.

Printing at 100% it can easily fit a 15mm Split Key Ring. I also used a 25mm Split Key Ring with Chain and Jump Rings to attach to the 15mm Split Ring.

DrLex Pile of Poo Github Link

Remix of Link: https://www.printables.com/model/252625-pile-of-poo-emoji-u1f4a9/remixes