Graph your browser-activity per-hour, over the years. This shows both how often you use your devices, and your sleep cycle.
node src/cli.js render --path BrowserHistory.json
node src/cli.js show-spec --path BrowserHistory.json
No, I wouldn't upload such sensitive data publically. Lots of people seem comfortable uploading example browser data to GitHub though! For politeness's sake I won't share a link.