Last night, second-overall pick Leo Carlsson played in his first NHL game. Prior to the start of the game, he participated in the long tradition of the NHL, the rookie lap. Instead of listening to Gary Bettman's new rule about wearing a helmet in warmups, Carlsson did his own thing, going bucketless for his first warmup in his career.
It's likely that these teams are paying their player's fines, or even their veteran teammates are, to make sure that the rookies get the full experience of their first NHL game.