Reminds me of this:

boxes like this in dublin get painted by artists as things like tarot cards, match boxes, scenes from around the city, etc: https://dublin.ie/live/stories/dublin-canvas/

it'd be cool to see street artists just decide to take them over directly with their own art/designs, so they're not always going through a county/local council (which i assume involves sanitising any socio-political messages the artists might have)

This happens way more in poorer neighborhoods. And highways.

Reminds me of the red wall fight in London

https://www.boredpanda.com/red-wall-graffiti-experiment-london-mobstr-curious-frontier/

Oh, Hey! That's a wall.