What is the Nerdiest Holiday Decoration You Have Ever Seen?S

In the comments, show us a picture of the nerdiest holiday decoration you have ever seen. Bonus points if it's a photo you took of something you actually own.

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For those of you who are dragging your feet about decorating this year, this list might provide you with some "good" last minute ideas. And look, I've started the conversation off with a few gems of my own.