Solving the Winter Time, Cheapskate Blues

Here's some more honesty. I'm not really a cheapskate, but I'd like to be one. Frankly, I'm lousy with the whole money managing thing, but unfortunately, it's largely my responsibility. Since I don't want our family in financial ruin thanks to me, I'm determined to figure things out and overcome my weaknesses. To do this, I came up with a list of cheap/free activities to do with my kids. These winter months can be unbearable, especially when the need to be cheap binds you to your home. But there must be some things you can do outside the home during winter time that don't cost a million dollars? Well, my brainstorming told me there are. Plus, it's so easy to forget the simple but fun things to do at home to brake the monotony, and my brainstorming reminded me of those as well. Here's what I came up with:

1. Library (my goal is to keep this free by not getting any more late fees!)
2. Make something using things already in the house
3. Explore the house, finding lost things; look for specific things, like the sounds different objects make when tapped with a stick, etc.
4. Go to the FREE zoo (the pet store)
5. Dance
6. Sledding (we're so lucky to live right next to an awesome sledding hill!)
7. Make a fun snack or treat
8. Play games
9. Have a friend/cousin over
10. Visit Grandma/cousins
11. Have a picnic in the living room
12. Build a fort
13. Have a read-a-thon
14. Write letters to people
15. Visit Dad at work
16. Write your own book by taking pictures of things in the house and making a story out of it
17. Write an "All By Myself" book using your kids as the main characters (i.e. "I can brush my teeth...I can make my bed...etc.)

What are some things you could add to this list? Where else could you go to get out of the house in the winter time without spending a ton of money, hopefully spending none? What else did my itty-bitty brain fail to come up with?