What to do with a bunch of raspberry pi zero w's

I am lucky to live near a microcenter so for the past 2 years every week i take walks and buy a raspberry pi here and there. I have a bunch of them pi zero w's . So I have a bunch of them and i want to work on a little project with them. So far I have been able to use them to run docker and data science containers using jupyter notebooks to learn python and now i want to do something with them some project where i can utilize at least a few of them on any sort of projects. Web crawlers, web servers? irc servers? something. I was wondering if anyone have some suggestions of projects i can try this spring/ summer in 2021 thank you everyone. Happy Spring