I know there was some project about this but haven’t heard of anything for a while. Ewaste is such a crime; all of my devices are used or older purchases that are past their “cool by” date. I have an iPad 2 and iPad mini that function perfectly but aren’t supported by apple anymore. Would love to get a second life for them instead of having to get rid of them for no good reason.
Disregard that, I see that the iPad 2 and iPad mini are not eligible since the min iOS version is 11. All devices since 2012 work though, hope that helps someone else. Sorry.
See here for a table https://iosref.com/ios