Give me some ideas to take the twins on the weekends.

Now that it's getting nice, I want to plan some things to do on the weekend.

Before this point, we've been to the park, the mall, the zoo and shopping in general.

We are thinking about go to the state fair this weekend. I've never been. I think it will be fun but I hope it's not too busy. A part of me thinks it might be too overwhelming for the twins (if there are a ton of people and we have trouble pushing the stroller)... I guess we'll go and if it's too much we'll leave.

Any other ideas?

Bonus if you can think of places to go around the Seattle area. I'm on the Eastside, so I heard there is a Children's museum in Bellevue that is baby friendly.