So I do not play hockey, nor do I ice skate so this one is a tough one for me as I do not really know what types of things they normally do in these times. I will make up a few here though, but they'll be likely duds if really tried.

Right off the bat I go for some form of dodgeball. Teams line up on either side of the ice, race to get a puck on their side. Then they have to pass their blue line in order to shoot. Then fires a puck at the other players to try to get them out. But that does seem a bit dangerous though. Maybe we use some playground balls for this or some sort of other ball that will not hurt as much when it hits you. Not trying to take the team out.

Alternatively I commonly see players with their own individual handshake things they do with specific players. That has to take a lot of time to come up with and then you gotta practice it right? Might as well use this additional time to work on those sweet ass greetings vs doing it on your own time. But I gotta wonder, is there a guide for this stuff? Do they make it all up? Watch youtube videos showing various things that can happen?