I've been building real-time collaboration into Obsidian (plugin is called Relay [0]) with the intent of integrating AI via standard collaboration flows.
We haven't released our AI stuff yet, but have done several experiments and it is looking really promising.
I'm also a heavy Zed user. A bunch of the UI (pre-Agent-overhaul) has been inspiring our work.
I've also experimented with voice recordings when on the go, and low friction transcription has felt like one of the killer apps.
One cool thing our plugin supports out of the box is using the voice input on Android for real time text-to-speech on Desktop (just have the note open on both devices).
I've also enjoyed using a script [1] I wrote to summarize bash history each day into my daily note.
It feels like there is a real spark in the Obsidian ecosystem right now. Super fun time to be building!
[0] https://relay.md