>Is there snow outside? Bundle up and go outside and build a snow fort or igloo.
If the snow is hard and crusty on the top layer, carve out blocks using your hands as if they were knives. Stack the blocks up to make walls for your fort.
Make this a family activity: Bring the whole family outside to make forts. If you make two, the two forts can have snowball fights. (Hide in your own fort and throw snowballs at the other fort.)
This activity promotes math and physics skills as well as being physical active.