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$60 Billion Potential Hiding in Your Discarded Gadgets
(www.motherjones.com)
This is a most excellent place for technology news and articles.
Another idea for android phones is octo4a (octopi for android) if you're into 3d printing. That's what my nexus 6 with a dead display is doing. Also you can run docker on 'em if you can build the kernel, and it's not too ancient (AFAIK, docker needs 3.something, so it's like android 6 in general, maybe?), but I personally never got to it, unfortunately
Wait does that mean I could make a kubernetes cluster of discarded android phones?
Yeah, probably