I just decided to make an Ice Rick (or whatever a hall where you can play icehockey is called on english XD)
Took me about 5-6hours. The part that took the most time was the roof.
It has 4 Sitting/Standing Areas, Player Banks, Penalty Banks, but not yet Player Cabines. If someone decides to play IceHockey on that Map, he will have to place the blue and red lines underneath the ice and set smooth lighting off, so that you can see the lines under the ice too. For a fully working ice hockey map, it will require much more work, but maybe I'll try somewhen.

Please feel free to leave a comment, on what to add, or make better.
If you like it please diamond, so that I know, I should improve it.
Thanks ;)