Honestly, plastic bags inside my shoes work as well as anything. Produce bags (cut down so they don't flap around my ankles) are lightweight enough that they even breathe a little. Over wool socks, they're not a bit clammy, at least down to a start temperature of 35° or so.
For the price of that beautiful lacinato kale you were going to buy anyway

you get a wind blocking cover that'll last you until you decide whether you want to clip in.