Thanks for all the input... Wool was my initial instinct. I actually have a couple sheep and work with wool quite often so I have many connections for free wool in the area. It has be quite interesting listening to how different each area is with shearing.
I know a bus probably isn't the best choice for most but it was really the best option for me at this time in my life.
I haven't seen the skoolie boards... Are they on here?
Any input on electricity or plumbing? I don't plan to use much of either at all ( composting potty, grey water, etc) but wondering it would be worth it to install just a little solar power?
Thanks again for all the advice... It really is so valuable!