Cooking stoves, there are plenty of companies that sell full blown ovens / stoves for cooking and heating the house on that just burn wood. Ive looked into this and often times toyed with the idea of building a big room addition to the house, call it my 1800's house or something and it's just a big kitchen with the wood oven / stove, and old time back in the days stuff.. for cooking. I really do need a bigger kitchen as it is now, or at least storage for all my cooking toys. Some of these ovens have hearths, pot burners??? everything on them and are really nice! TBH an ole fashioned pot belly stove like you used to see in train stations with a burner plate on top would suit me fine too. If i went the 'wood oven' route, to be honest id probably build a big pizza oven outside. that of course would cook other stuff too but...
Roof water you would think would be clean but bird poop among other things can cause you BIG problems, hence the need to sterilize it, or if you are in a hurry a cap of bleach works too. If you did dig a well, even if was a slow pump well with a few gallons per hour, those hours add up. You can also build a cheap filtration with sand / charcoal etc to get the big bugaboos out and then just heat or uv/O3 to kill the critters and no seeums in the water.
Aaron