I'm looking for a little help from all of you wise Portland mamas . . . . I want to send gifts to my neices who live in Beaverton, OR. I'd rather send them gift certificates for things they can DO, rather than things they can buy. But, I just don't know for what. My neices are in 3rd grade and 6th grade. We've done OMSI a few times, and I think they are too old for the Children's Museum. Their family already has a membership to the zoo. Any other ideas for really fun pre-teen activities in and around Portland? Your suggestions are much appreciated. Thanks!!