For an inexpensive and quick snow camo, I like to use a Tyvek painter’s suit. This is a white coverall-type suit that you can purchase at your local paint store. Just be sure to get one large enough to go over your warm weather clothes.
Tyvek is the material used as vapor barrier on homes, so it really keeps the wind out. The only drawback is that it might be a bit noisy until it’s broken in. The suit is reusable and can be rolled up and stuffed into a fairly small space. Customize it with a little paint to break up your outline and fit your local surroundings. Some versions come with a hood, or you can top it off with a white hat and gloves to makes a great camouflage for a late season stalking bow hunt.