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.
Unfortunately, it looks like some of the hardware is pretty funky. People have been working on it, on and off, and gotten the kernel to boot on some iPads, but things like bluetooth don’t work and there appear to be no prepackaged solutions for even the basic kernel yet.