I've been talking about this with a friend/colleague of mine. Some of the greatest sources of data are "recorders" that are running in the background. Oura or any other activity tracker, Google Maps with location history turned on, browser history. Data privacy concerns aside, those sources can really help tie things together.
Personally, I stopped using my Oura ring and don't have location history collected anywhere (that I control or know of). One of my big ideas for this is a native application for your phone and laptop that collects everything it can in the background and surfaces it somewhere you control (synced via a service you choose, lands on a machine you own). Maybe overkill for many people but being able to access that without giving it to another service would be something I'd use.
Personally, I stopped using my Oura ring and don't have location history collected anywhere (that I control or know of). One of my big ideas for this is a native application for your phone and laptop that collects everything it can in the background and surfaces it somewhere you control (synced via a service you choose, lands on a machine you own). Maybe overkill for many people but being able to access that without giving it to another service would be something I'd use.