Hello. I have made a website with a map of berry kiosks in Helsinki (and the rest of Finland too if there is data).
https://www.marjakioski.fi/
I am collecting data for the kiosk locations so that any person could use it to find fresh berries. Some locations are already marked but if you know any kiosks in your neighbourhood, please write in this topic and I will add them to the map. Also, you can add them to the map yourself through the "Add kiosk" form.
This is just a hobby project for me and for everyone who needs this kind of info, I am not getting any profit out of it.