Novelty reindeer antlers
From Tardis Wiki, the free Doctor Who reference
Near Christmas in the 2000s, Wilfred Mott wore two pairs of reindeer antlers made of fabric over his hat. (TV: The End of Time)
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)