Kids in winter

What do you do indoors?

What temperature do you still allow them to play outside? how many minutes?

What do you do at home for the children to learn have activities and play

I don't want just TV on all day that's unhealthy during the summer we are outside all day we look at so much nature but in the winter when its 20 degrees f and it starts getting colder 17 degrees f with wind chills 7 degrees I'm not sure if we can go out

What do you do in the winter to keep occupied? what keeps you from getting cabin fever