Here's how to make some emergency crampons for walking on snow and ice. They are made out of easy to find chain and paracord and can be kept in a plastic sandwich bag. You can keep them at home, but a better place is probably in your car. The paracord uses an adjustable knot to fit over whatever pair of shoes you are wearing and won't cut into them like an all-chain crampon might. These things give you amazing traction even walking on ice. They could easily save you from a nasty fall.