Looking for ideas for a travel heatmap

I’m wondering if anyone has a way of producing a heatmap of time spent in different locations based on a HA Person or device tracker.

Here are examples of the look the visualisation I had in mind (from mouse screen-position mapping software)

I know the standard map card can plot a history, but it does give any representation of where on a route I paused, for a few minutes, or hour(s).

It would also be interesting to view history over days or weeks (although it wasn’t my original reason).

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