I agree that it is VERY satisfying to make things. In my hobby, one learns to make everything - but not necessarily without consuming fossil fuel directly and indirectly. I don't know of many activities that have absolutely no fossil-fuel energy load. In any case, I uploaded a few photos of a petroleum crude unit I am working on that will not contribute very much to climate change or resource exhaustion. In addition, it illustrates efficient material recycle. I don't know if Energy Round Table photos are available to everyone, but these will be: http://dematerialism.net/petrolrefinery.htm