Below are some ideas for an in home snow day workout.
1. Pullout the old workout video, or go on youtube and/or fire up the Wii fitness program.
2. Do some yoga or just plain old stretches.
3. See how many different forms of pushups you can do.
4. Fast walk around the house.
5. If you have a second floor walk up & down the stairs, it's better than a stair master.
OR
Take a day of rest, mediate, snuggle with your partner, take a nap, plan a week of healthy meals and recharge you're batteries.
Don't stress about missing a workout. If you're into a regular fitness program, missing a workout now & then won't hurt you and can even be a benefit. Remember you don't grow muscles unless you rest.
Enjoy the snow day. It'll be Spring soon enough and then there's no excuse!