Love this idea! Get an email address for your kids when they are born and over the years send them emails, pictures, memories, etc. Then on their birthday, give them the password! Absolutely going to do this someday!
Enhance an Existing Structure. Pergolas are commonly freestanding structures -- but you can attach a pergola onto the side of your house, shed, or garage, too. It's a great way to save space and add interest to an otherwise ordinary wall.