I'd love to track all this, but it feels like every few years some new technology comes out and I lose a weeks, months, or years worth of lists somewhere.
Spreadsheets, OneNote (originally text files, but OneNote for the past 18+ years and probably for the next 18+ years too), cameras captured to JPG or PNG. I don't rely on online services or SaaS websites that can arbitrarily disappear or lose my data.
Where do you keep all this?