https://notebooklm.google.com/ is really handy for various things, you can throw a bunch of documents into it and then ask questions and chat interactively about their contents. I’ve got a notebook for a roleplaying campaign I’m running where I’ve thrown the various sourcebook PDFs, as well as the “setting bible” for my homebrew campaign, and even transcripts of the actual sessions. I can ask it what happened in previous episodes that I might have forgotten, or to come up with stats for whatever monster I might need off the cuff, or questions about how the rules work.

Copilot has been a fantastic programming buddy. For those going a little more in depth who don’t want to spring for a full blown GitHub Copilot subscription and Visual Studio integration, there’s https://voideditor.com/ - I’ve hooked it up to the free Gemini APIs and it works great, though it runs out of tokens pretty quickly if you use it heavily.