The stupidly-named holiday side story to The Iron Horse: Everything's Better With Robots!
Robot pony Turing Test learns about Hearth's Warming and decides to get a gift for Twilight and Spike to show her gratitude for all they've done for her, but she wants to do something special. No gift cards, socks, or box of sugar plums will do for this robot! To find the ultimate gift for her first Hearth's Warming, she'll go to the ends of Equestria!