Parents of Niagara - What free/cheap activities do you do with your kids in the winter?

Looking for inexpensive places to get out of the house when weather is gross. What do you like to do with your kids?

Some things we do that others may be interested in: *The Library *Butterfly Conservatory [NF] *Pen Centre [SC] (especially when the Christmas train is set up) *Niagara Falls Wonderpass [NF] (this was super cheap and a few days of good outings for us a few weeks back) *Bird Kingdom [NF] *Festival of Lights [NF] *Let It Glow [SC] *The Watering Can [Vineland] *Rice Road Greenhouse [Welland] *Lock 3 Museum [SC] *Family movie days at Landmark Cinemas [Pen Centre] and Cineplex [NF + Seaway Mall Welland]