Since may daughter no longer uses all of her swingset/playhouse we're planning on building the coop out of the sandbox area & having the run between it and the garden. I've been reading like crazy & trying to come up with a design, but I'm very open to suggestions. The picture below is what the area looks like. I've got the gravel dug up in order to move the whole thing down about 3 feet to make a bigger run. The sandbox area is 57"x 57" and 47" height. We'll have a flat roof since it's under the playhouse portion (wish my daughter was ready to give that part up!) and plan on having the nestbox protrude on the outside to make it roomier inside. Any advice and/or suggestions will be greatly appreciated. Thanks!