>>42789360
Next time you fill out the sign up form, explicitly mention that you don't want an Aryannefag, then you'll avoid this situation. Win win.
But you have to take a deep breath and think about what you're doing for this Santee of yours. If Aryanne is their actual waifu, receiving no Ary-related merch at all will not go unnoticed. If you can't even accept Aryanne with a blank pink heart CM, there are still ways to send something to make an Aryfag happy without involving politics:
Does your Santee have plushies (of Ary)? Gift him a scarf and socks that could be worn by anypony, so you can just imagine e.g. Anonfilly wearing them instead. Maybe a little trinket of an EdelweiĆ flower. A handcrafted medal that playfully makes fun of his edgy taste in ponies. Make the packaging Oktoberfest themed. A children's book in German. Just ask him what he likes about Ary aside from the nazi stuff, and work from there.
A Secret Santa generally isn't the right place for political warfare. During WW1, German and British soldiers put away their guns during the Christmas holidays, climbed out of the trenches, and bonded for a short while. They traded rations, smoked, showed photos of their loved ones to each other, played cards and football. After the holidays, they were forced to commence killing each other.
Let's all be like those soldiers: Be human, for Horsemas.