For tiny homes, I like the curved roof (as in vardos or Gypsy cabins). It gives you a feeling of spaciousness, as opposed to, say, the typical steep gable roof used in tiny homes. Another factor, which I learned from master builder Lloyd House, was to have windows at eye level; this focuses your attention on the outside, and the room feels much larger than it actually is.
The paneling is from a recycled hot tub. I had the staves band-sawed. Insulation is with recycled denim. Most of the work on this was done by Billy Cummings.
More details on this building are in The Half-Acre Homestead.