I've previously mentioned my adorable 300 square foot cabin that I called home for a couple of years over in Lincoln. The one thing that always really bugged me was the poor insulation. It didn't bother me (necessarily) because of the increased heating costs; it was mostly the lack of light. In an effort to help sure the place up a bit (and stop the curtains from blowing in the wind…with the windows closed!) I added plastic to the inside and outside of the windows. This made a huge difference in the overall comfort of my home but sacrificed any sort of natural light coming in. It wasn't "dark" but it was not all that bright on even the sunniest of days.
I say all that simply to say that lighting, especially natural light if you ca...