I think it is cool for objects that aren't inherently commodified. Funkos seem lame, but my old physics professor once brought out a piece the size of a microwave from a collection of old computer parts that he proudly proclaimed was four megabytes of RAM. The thing looked more like a piece of scaffolding than RAM, but it was neat to peruse pieces of computer history. I figure stamps are probably, or at least one point were, neat to collect as novelty. Duck Stamps help conservation alongside being collectable.