About 7 months ago I bought my high schools old bus on auction. The driver had always called it Old Bessie so thats what I wrote on it.
I set a budget of $500 for the interior and I probably spent a lot less than that it is all made from pallet wood and upcycled trash.
As soon as I can find a welder I'm going to put a rack on the top and there'll be a patio up there as well as the water tank, rainwater harvesting system, solar water heater, solar panels, and wind generator.
It has some trouble with hills and there are only hills around here but otherwise its pretty solid.