If you need to travel over deep snows, then you'll need footwear to help you move. Here are a couple links explaining how to make your own snowshoes.
Make Your Own Snowshoes
Snowshoes work by distributing the weight of the person over a larger area so that the person's foot does not sink completely into the snow, a quality called "flotation".
In the past, snowshoes were essential tools for fur traders, trappers and anyone whose life or living depended on the ability to get around in areas of deep and frequent snowfall, and they remain necessary equipment for forest rangers and others who must be able to get around areas inaccessible to motorized vehicles when the snow is deep. However, snowshoes are mainly used today for recreation, primarily by hikers and runners who like to continue their hobby in wintertime. Snowshoeing is easy to learn and in appropriate conditions is a relatively safe and inexpensive recreational activity. (source: Wikipedia)
Cub Scouts have been making their own snowshoes for decades.
Boy's Life Dec 1998 issue: Make Your Own Snowshoes