A collection is never truly complete—but as any collector will tell you, that's the best part. Whether you're gift-shopping for someone's hobby (or feeding your own), Groupon rounds up an always-changing selection of the most popular types of collectibles, including sports memorabilia, coins, paper money,
figurines, and even
Numismatics is the technical term for the study of
coins and paper money
, and Groupon accommodates numismatists of all denominations. Newcomers to the field can flesh out their collections with coin sets and storage
. More entrenched hobbyists, however, can seek out individual coins—including rare and precious-metal finds like a pack of gold-plated original Lincoln wheat pennies—by filtering for both price and mint. Paper-money collectibles tend to be much more colorful (literally) with hand-painted bills commemorating everything from the Declaration of Independence to
out there with your name on it, assuming your name's John Elway. Sports memorabilia is all about the autograph, whether it's scribbled across a baseball, football helmet, basketball jersey, hockey puck, gold-dipped card, or photograph. As a result, ardent fans can accent their man-caves with everything from a panorama of Michael Jordan dazzling the crowd at the 1988 NBA Slam Dunk Contest to a signed photo of Florida State coach Bobby Bowden.