By StyleWatch
Updated December 10, 2009 10:28 PM

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We polled a slew of celebrities–from Ashlee Simpson-Wentz to Tiffani Thiessen and Julianne Hough–to clue us in on the items they won’t walk out the door without. Check out our video to see who’s addicted to Tic Tacs, who’s always equipped with an “extra-special guitar pick,” and which Mad Men star keeps baby powder on hand at all times, because, he claims, it’s “always good in the clutch.” Tell us: What do you never leave home without?