Novelty reindeer antlers
From Tardis Wiki, the free Doctor Who reference
Reindeer antlers made of fabric and attached to a headband were commonly worn at Christmas time.
Wilfred Mott wore two pairs over his hat. (TV: The End of Time [+]Loading...["The End of Time (TV story)"])
In an alternate timeline, Wilfred also wore two pairs of fabric antlers on Christmas 2008. Sylvia Noble told him to take them off, but Wilf refused, because "it [was] Christmas". (TV: Turn Left [+]Loading...["Turn Left (TV story)"])
On Christmas Day 5343, the Twelfth Doctor was wearing a pair of antlers when he first met Nardole. (TV: The Husbands of River Song [+]Loading...["The Husbands of River Song (TV story)"])