Of course you can't promise anything, I want you to know that I don't have any expectations. I really appreciate the santa hat that you've already uploaded. I've actually used it in a neat little Christmas map that (hopefully) will be finished before Christmas. I hope that I have your permission to do so, but seeing as you have uploaded it and due to the fact that I'll add you to the map credits, I think it should be okay.
I'm happy that you mentioned simple, small Christmas doodads/attachments. I have actually made a thread about what I personally think we miss at the Christmas-doodadish plane. Maybe this can help you with getting some constructive ideas.
EDIT:
I see now that you've actually posted in that thread already, and that you even mentioned my list in that post. That's how long my memory reaches.
Do you want me to give you some more examples or is the list I've posted profitable enough?