What would be a good icon for twtxt?

I chose the hash emoji #️⃣, which has many variations: https://emojipedia.org/keycap-number-sign/

and I liked the tweoji one, I think it has a good license: CC-BY 4.0/MIT
https://github.com/twitter/twemoji#license

It would be nice to choose an Emoji/Image/Icon as a convention. What do you say?