If you have whipping cream, make butter on this cold day!
Pour a quarter cup or so into a sealed container, put on some music, and dance and shake. Pour off the buttermilk (my preschooler drank it), and spread on a cracker or bread. Talk about where milk comes from, and enjoy some fresh butter!
If you want lots more detail on making butter, check out this article by Epicurious.
Have you ever made your own butter (intentionally, or by accident)?