What comes after a hat trick?

Answer 1

The players don't do anything with them. As far as I know, the hats are just cleaned off the ice surface by the area's crew then either given or thrown away.

Ken Fougere

Another answer:

Many teams have a policy of donating hat trick hats to charities.

Garpinator

Answer 2

fans throw hats on the ice

Answer 3

Yes, it's a tradition