The only thing I really use Twitter for is to get certain updates/notifications. Is there a way to pull my twitter feed into a Mastodon feed? I've done a little looking, but didn't find anything.
I can imagine some sort of "proxy instance" which takes Twitter data and presents it in an ActivityPub-compatible format. However I'm not sure Twitter provides an API for reading that much data at scale (rate limits). But in principle it seems doable to me.
The way I'd do it is set up a bot account that toots your twitter timeline, make it a locked account and only approve your mastodon account, make your replies to your mastodon bot then be tweeted from your twitter account. Build your own bridge, heh