While we're shilling for Obsidian, I'd like to plug "Obsidian-Admonition"[0], which has been a gamechanger in the way I take notes. It's a simple extension of Markdown protocols with an enormous amount of flexibility for adding block-styled content. If you've ever wanted to glitz up your notes with some documentation-styled content blocks, this is for you!
[0] https://github.com/valentine195/obsidian-admonition