I'll start.
We haven't done no mow may, but we have planted some fruit trees in the garden.
We got an allotment plot a couple of years ago now and since then one of our friends has got one and another has started a vegetable garden in their back garden!
The friend who is started a veg patch used to give us their rabbit waste (hay and the precious poo! Amazing fertiliser) will need to start their own compost heap now, so I contacted the local pet shops and they said that we can have as much rabbit and hamster poo as we like! Win!
Apparently loads of people come and collect their waste so now I know pet shop don't make half as much waste as I thought.
Noticed 2 veg patches in front gardens this year, and one person has chickens!
Lots of people are doing no mow May, including my parents (but that's being busy, so not by design but the results are the same)
What else?
Oh I've noticed 2 parents at the school have started cycling (they used to walk so no emissions change but its still a good thing)
I'm sure there is loads more.
Oh my parents took some bags of clothes to the charity shop instead of the usual dump because since covid started the tip requires you to book in a slot, so you can't just drop in anymore. This made me wonder has this Encouraged others to use charity shops rather than dumping good stuff for convenience? I hope so.