Getty/Dan Kitwood Fingerlings are the hot toy this holiday season, and they're selling out faster than retailers can keep them in stock. The head of toys for Walmart convinced the Fingerlings' creator, Wowwee, to sell them for a lower price. Wowwee advertised them on YouTube, sensing that commercials on kids' TV networks wouldn't cut it. Fingerlings are the hottest toy this holiday season. The robotic monkey that can interact with children, sing, and fart has become the must-have item.