When we were kids and wanted to play outside in the rain or snow, we didn't have boots. My mother would put plastic bags over our socks then put our shoes on then cover the plastic bags up with our pants. My mom used bread bags but I used recycled plastic grocery bags for my kids. These days I still cover my socks with plastic bags before I go out into the snow. It's one more useful thing you can do with those plastic bags that are just waiting to be reused!