I use Obsidian to:

• write a pen & paper RPG
• write the content for my website
• correct, edit, and sort articles for work

The plugins I use most are:

• File Hider
• LanguageTool Integration
• PasteURL into selection
• Replace Commands (I made that one for my work stuff actually)
• Templater for the RPG (character sheets, etc.)
• Link with Alias (great for the RPG stuff to make sure everything is easy to navigate between)
• Format With Prettier (for my website, so the markdown is consistently formatted)
• Image Converter to use webp whenever possible.

i use obsidian for

a) work times b) study

for work times, i use periodic notes and the built-in bases (i was using dataview before that) to sum up the months, manage vacay days and shit

for study, meta bind, dataview and callout manager do the heavy lifting

and lastly i hooked the theme into noctalia-shell's mutagen, and notebook navigator for better management.

I just use Obsidian Git (I think that's the exact name off memory), as I use Git for both my source control and a form of sync between my laptop and desktop