living in a house with no heat you realize how cold it can be, and when you're lying in bed freezing, thinking about all the heat escaping out of the top of your head because the covers only come up to your chin, you start to think about wearing hats to sleep. except they'll fall off unless they have a chin strap.
this could be easy. market them as eco-friendly because you can lower your heating bills by preserving your natural body heat. my co-worker had a great idea to add to it... buy thrift store cashmere sweaters and make them out of those. that way they're each one of a kind and you can market them as high-end, re-purposed, eco-friendly night hats, and you're in.
white people would be so in to these. (i just need a good name.)