Other than his handyman work, Culkin's chief holiday responsiblity is stuffing the stockings that were hung by the chimney with care. 

"I guess the best word would be maestro, maybe master, of stockings," the 44-year-old shared. "I nail the stockings every year. I'm just about to get on top of my stocking game as we speak." 

The key, he explained, is having enough varied interests that Amazon knows where your head is at before you even log on.

He knows he's done his best work when Song, 36, is like, "'Where'd you get that?'" he shared of picking out treasures like a Zoltar fortune-telling machine similar to the one featured in Big. "It was like, 'I don't even know. I think it's from Switzerland?' It's because I have such kooky taste, that my recommendations do half the work for me."