I think that far exceeds "a little effort", however. And there's the problem of access. I might be able to mine graphite, but where am I going to get a graphite

I think that far exceeds "a little effort", however. And there's the problem of access. I might be able to mine graphite, but where am I going to get a graphite mine? I enjoy the How to Make Everything channel on Youtube for this reason. Here's what's probably their most popular video, the $1500 Sandwich: https://www.youtube.com/watch?v=URvWSsAgtJE https://www.youtube.com/watch?v=URvWSsAgtJE