Toy makers are bringing an element of surprise to the holiday season. Taking a cue from the YouTube phenomenon known as unboxing—viral videos in which people theatrically unpack hot new products— companies are churning out tiny charms, stickers and golf-ball-size critters, all tucked away inside layers of plastic. The mystery objects have become one of the hottest categories of toys this season.

Source: Wall Street Journal November 25, 2017 12:00 UTC