I wanted to make the mini-cabin as impervious to the casual thief or trespasser as possible so I built some wooden shutters for the interior windows. The shutters are fairly solid so will make gaining entry through the windows difficult as well as preventing inspection of the contents of the cabin by any would-be pilferers.

I made the shutters out of white oak just because that's what I had laying around. They don't really match the cedar but I just won't tell my interior designer.

You may be saying "those are some mighty fancy shutters for a glorified shed" and you'd be making a valid assessment.