Since Twitter is turning into a massive dumpster fire, many users are turning to Mastodon. As such, I've just implemented a rather rudimentary method of embedding Mastodon posts (I refuse to call them "toots"). It works like the Twitter embeds. You click on the button in the button bar that says "Mastodon", past a link to the Mastodon post which is in the format:
https://masto.ai/@rbreich/109510504763967965
and then click the Mastodon button again.
I assume no liability if Elon Musk finds out about this and suspends your Twitter account.