I finally got my "I've brought in the bin"* doo-dads mounted near my back door.
* I have some next bin day displays which scrape the council's website. The website doesn't know that my bin has been emptied at 8am, so will return "Next bin day is today" all day, which is useless when I want my displays to tell me about tomorrow's bin.
After bringing in a bin, I scan appropriate doo-dad with my phone, and #homeassistant does things to look at a different part of the webpage.