Spotify isn't doing anything unique here, and it's not really a marketing campaign to explain away their UI. It's more of a showcase for hiring professionals, developers/designers/etc. Facebook has a similar one -> https://design.facebook.com/. Source: almost 3 years ago

Also, read anything published by Design @ Facebook. Source: over 3 years ago

Personally, I like the Getting Things Done method, which has you store notes in an "inbox" (for me, that's a Trello board), which you prune daily or weekly, which involves pruning out the stuff that really isn't important or that can just be done right then. Once I deem a thought or some information worthy of long term storage, I use the mind mapping software TheBrain. That allows me to store information quickly... Source: 7 months ago

Works really great! Also, I'm a 20-year user of TheBrain (thebrain.com), and I can drag and drop the files from my Obsidian vault to TB as links. Then, I can edit those files in TB, link them to other 12,000+ thoughts in my TB, and those edits will show up in Obsidian; vice versa, edits made in Obsidian show up in TB. Source: about 1 year ago

You might get some ideas from thebrain.com. Source: about 2 years ago

Useless for my task: Thebrain.com. Source: over 2 years ago

In this type of programs the best is theBrain https://thebrain.com/. Its dynamic mind maps allow store any quantity of information there. Source: over 2 years ago