When I first started bringing my kids ice fishing … no toys. Kept the trips about 2 – 3 hours total with maybe 1 – 2 hours on the ice. Pannies and hoping bite was good.
Walked out, walked back or they rode in sled pulled by my wife.
As they got to about elementary school age would either pick a warm day or use a temporary shack … same thing … fished 1 – 2 hours top (well maybe longer if the bite was steady). Let them roam around but tried to get them from getting too loud.
To be honest I mostly stopped ice fishing when I had three younger kids … all playing sports,etc… My priorities were hunting, hunting, hunting, summer fishing, and then ice fishing. Sports take their toll, especially hockey. Some really warm winters that decade and January is the peak month for games and tournaments. Once in HS / college and/or out of the house … all the time in the world. Any are always welcome to come along but they do not often impede my return to the ice.