Here's what we found: Spider-Man was the most-repeated costume, showing up five different times across our lists. Captain Jack Sparrow also had a strong showing, as did Ghostface, Batman, and Teenage Mutant Ninja Turtles. Big props for longevity to Morticia Addams, who showed up in 1967 and 1991.

First up: Create a standard but loveable ghost costume using the things you have in your closet. Throw on an old sheet, cut out eye holes and pair it with a fun hat and sunglasses. Take it to the next level with some vibrant socks and boOoots!

But there's one burning question: where does all this merchandise go when Halloween is officially over? "We sell 'em next year," Balles tells PEOPLE, pointing to the Barbie costumes hanging on the shelf, which were still popular this year. "We have distribution centers and partners that manage the whole process."