Thanks, David. And yes, 3D printing sounds like a potential solution in the future. I haven't dreamed of a complete case, but when I was first researching how to fix the glare issue in the $69 Kindle official lighted cover, I was dreaming of molding some kind of "hood" for the light that I could put on when reading. Then again, for that particular scenario the cardboard or felt tape ended up being a better solution because it can remain in place even when not in use.
But 3D printing and other hand-made techniques should certainly come welcome for us who are not perfectly satisfied with official or third-party solutions. I know I've certainly looked at plenty of first and third-party products in my search for the perfect Kindle experience - if I would have had the skill and equipment to make my own, that would have solved it a long time ago.