The assumption is that if you have a significant other you would do all these things TOGETHER! And if you have a family that you do all these things TOGETHER as a family!
1) Shovel Driveway!
2) Build a Snowman!
3) Make cookies!
4) Snuggle by the fireplace! (Or the oven if you don't have a fireplace! Or even in front of the computer with a picture of a burning fireplace!)
5) Make a snow-angel!
6) Have a snow-ball fight!
7) Have a movie marathon!
8) Play some old fashioned board-games!
9) Play hide-n-go-seek inside!
10) Play a game of paint-ball! (Okay, so that wouldn't work ... so use nurf guns!)