I gave my SIL a simple flannel quilt, 5x7 6" or 8" blocks, I can't remember...
Anyway, about a week later my BIL had to go into the hospital for a couple of days. They took the quilt with them and used it all the time. They said there were several comments. The hospital was cold in the areas of x-ray, etc. where he had to be.
They take it everywhere with them now...
(Pictures on Picassa below)