Unfortunately, in our case (Northwest Indiana), there is nothing we can do either as a team to keep our building momentum going. Once our school is closed due to snow, we are not allowed to meet at our high school and we have no real alternative meeting spot.
Now, with that said, there are many things that the team can continue to do. A few off the top of my head: Continue to tweak and develop robot code, Research new designs for grippers and arms, and the list could go on for hours. In the past, we have anticipated when the school will be closed and have given our students "homework" assignments (where have I heard that before...
). This keeps them thinking about robotics and you'll be surprise what they can return with sometimes.
Hope this helps! Stay safe and warm out there.