I need decorating ideas for a boy and girls sharing bedroom....?

I have a 3 year old daughter and I am expecting a baby boy in November. We are in a 2 bedroom house right now and expect to be here for atleast another year. I am wanting some themed decorating ideas so that the kids feel comfortable sharing there bedroom. I know he will be a baby and wont really care, but I still want something that will go for both kids. No to babyish and not to girly...please help!

Answers:
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