This little gadget is the answer to a teetery maiden's prayer in this weather: rubber oversoles with spikes, which you pull on over your boots/wellies/shoes/trainers. I wore them yesterday to push AJ along the icy West Bay prom to the playpark, and was able to march briskly without a hint of sliding.
I bought them in Tiso's in Glasgow for £25, and my only regret is that we only bought one pair - we thought we'd try them out first. Unless Mr B and I take a foot each, we're kinda limited right now - but this is the official Blethers recommended product for the winter.