have one for my own use and it aint perfect as you sit either a bit above (if youre naked) or abit inside (if youre wearing a cuirass) of the deer
its also making horse like sounds... i think it has to do with the nightshade the deers eat all day
if you start a new game you also get a new spell to summon a 300 sec deer but if you fastravel while its summoned the game crashes but you can have a mount inside cities that way (if you guys really dont want it ill take it out)
but nevertheless its kinda funny so if anyone wants it say so and ill pack it up and upload it...
also if you people have good ideas regarding rudolph... well say so and they might be implemented... (textures, saddle, special skills, ai, whatever you can think of)