On my TODO list is to build a system that downloads the text content of all the sites I visit and dump it in a vector DB. Then make my own search engine using RAG.
I did write a script that does the downloading part. It looks at my browser history and downloads the text of every site going back years.
Ditto for decades worth of email. I want to see if I ask it for my nephew's birthday, will it figure it out?
Should be doable without much difficulty.