On Erin's desk there's the Christmas card Michael made in A Benihana Christmas (2006), where he put his face over Carol's husband's face in a picture with her and her kids.
Dwight has band-aids on each one of his fingertips because he thought his gift was a gun and didn't want to leave prints.
Dwight's list of possibilities for what his Secret Santa gift is: aardvark trap, beaver trap, gun, possum trap, skunk trap, lobster trap, man trap, lathe, Abdominizer, speculum.
Michael tells Dwight his PIN number is "it's fun to stay at the..", which is a lyric from the song YMCA by the Village People, meaning that his pin is in fact "YMCA", which corresponds to "9622".
Dwight's secret Santa gift has a part that is shaped like the graflex flash handle that was used to create the original lightsaber hilts for Star Wars: Episode IV - A New Hope (1977).