Regular, organized (and not so organized) events on the frozen lakes here as well. all of which are well attended. Most lakes clear a patch for amateur ice-hockey, driving schools and the police organize lessons for skid control for any driver who feels the need and most popular of all is stock car racing - sometimes dangerously close to the ice-hockey area, in my opinion. Then there's wind surfing, ice-skating (of the long distance type rather than the dancing type) when you can take yourself out to small islands with a picnic.
I tend to keep myself near the edge as water below 13c degrees should not be allowed to come above the knees if the ice should break.