With the cold weather this holiday weekend, I imagine that you are looking for some indoor family fun. We went over to check out Winter Wonderfest at Navy Pier this morning.
Overall, I thought that it was a fun event (kind of like an indoor version of Kiddieland). My three and five year-olds ran around and had a blast. There were activities for both big and little kids. The outing cost us $64 (for four wristbands and parking). For a small additional fee, you can also ice skate. The crowd wasn't as bad as I was anticipating. Plus, we stayed nice and warm.
Winter Wonderfest runs through January 3rd.