I made a couple of things that some people might find useful.
- mytoots.el: Search your offline #Mastodon archive from the comfort of #Emacs and curate your old posts in #OrgMode or HTML
- ol-toot.el: An Org-mode "toot" link type for Mastodon posts that works with mastodon.el
Testing and feedback welcome
EDIT 2024-09-24: Now with better integration between the tools, improved docs