The ROM is cheap on Friday nights, five bucks I think. (unless you go with YATS, then it's free!) There are some great things for kids to check out, I highly recommend the bat cave. The AGO is free on Wednesday nights. The Toronto Public Library has a ton of free stuff for kids too. Some of it really looks like fun. You should take her canoeing too, it's such a quintessentially Canadian thing. There's a great rental place in Paris, near Brantford, or you could go rafting with Blue Heron rafting. The owner is comedian Roger Chandler, so it's always a fun time. Rafting is fun on its own, but throw in Roger and it's a boatload of monkeys! (lots of pun intended) If you want to go camping, my family used to always go to MacGregor Point near Port Elgin. They had lots of kids activities put on by the park staff and it's a beautiful spot that's not too far away. What about renting bikes and taking her on a tour of the Toronto waterfront or somewhere like that? Rainbow Cinemas is a good place to go for cheap movies. There's one somewhere along Front Street, if I remember correctly. That's all I got.