I get Christmas catalogs from Cabelas and Bass Pro Shops. I never buy anything from them, but I do enjoy flipping through them.
I saw the most remarkable gadget in the Bass Pro catalog: Remote controlled thermal shoe insoles. The insoles look kind of like a Dr. Scholls insole, but have batteries in them. You use a remote control to control the temperature, like, high, low, and off. Seems like a novel idea for people with cold feet. They were pretty expensive.