Friends of mine have just become new puppy owners. As would be expected, the first thing they did was go shopping for all the new equipment that is required for a new puppy. Leashes, collars, toys, sweaters, booties, etc. They bought a cage for crate training their new puppy, but they just weren't sure about whether they should get a dog bed along with the cage.
I told them to hold off on buying a dog bed. This doesn't mean I am not a avid proponent of dog beds. I am. However, I don't think it is appropriate for a puppy to use a dog bed. More accurately, I think it might be impossible for a puppy to be expected to stay in a dog bed. For at least the first 8 to 12 months in their new homes puppies need to sleep in a cage.