With the current Twitter debacle, I think self-hosting my "notes about interesting things" (aka tweets) in a way it is accessible via the web, activitypub, bluesky and RSS might be the best way.
Is anybody already doing this? It shouldn't too be hard. Just throw all the notes into a directory and add some code which replies to the different types of requests.
I guess the best way to get ones tweets out of Twitter is the "Download an archive of your data" thingy in the settings?
These tools exist at least between activity pub and RSS. I suspect similar will exist for bluesky if it takes off. https://github.com/dariusk/rss-to-activitypub