I don't know if its rude, but honestly, if I'm getting the same gift as everyone else, I feel like its not really a gift meant for me. Now, if you change things a bit to reflect the people you are giving the gift to, then that's different. So, for example, if you make me a cat ornament because you know I love cats, and betsy a dog one, because she loves dogs, then that's great.
But if we all get the same ornament painted with snowflakes, then, eh. I'll still be appreciative, but I probably won't value it like I would something personal.