Thanks. Because your kids are small, which means their smaller body mass makes them vulnerable to extreme cold. I was wondering whether lining leather with denim (for trousers and jacket, would not provide better insulation, while avoiding the leather being against skin - plus absorbing sweat etc. The denim could be attached with clips so that it can easily be removed and washed.
Also, if you are going to be recording for all, the history of such days, you'll need a good supply of extra memory, since I doubt the cloud will be available.
I look forward to hearing what other ideas you come up with - plus I'll be checking your other posts.