The most basic Earthship Design. Quick and Inexpensive to build. Requires no mortgage., instead of tires, let's use a "HESCO Bastion" type set-up. Less labor intensive than packing tires, and the walls can be load bearing.
The DutchTub, a "low-tech" jacuzzi that uses a very rudimentary heat exchanger coil to heat the water. This idea can be used for heating water via open flame, adjoining grills or stoves, coiling etc. - Me: human salsa bowl!
This is near perfect--Earth Sheltered Homes and Berm Houses - a great cutaway view of how to set up a bermed home to allow light on each level, (front and back) as well as perfect indoor growing conditions for indoor gardens and green walls.