How I see it would be a massive investment into what would be previously e-waste. Even super low end hardware can be used as servers if given a lightweight Linux installation. Just yesterday I took an old budget Android phone out of the closet and factory reset it, debloated it, and installed a web server on it just for fun. Obviously I have much faster machines so I don't need use it, but I could easily port forward my IP to it and host a website off of it if I needed to.