I am by no means done, but I made some impressive progress.
I moved his crib into the corner, shuffled the bookcase and doll house around and took out a bunch of things.
The slide still needs to go outside though. He likes it, but it is pretty big.
He got the dollhouse from the girls room, not sure how long he'll have it. I may decide to sell it. He played with it in their room but is less interested now. Maybe it critters in it like they had.
He was so excited to see this rug. We have been building large tracks on the surface, and trying to keep them on the rug. Anything with lines makes him think of tracks.
So far we have kept it clean, an he had lots of space to play in the center. He is doing a lot of cooking dinner! I love to eat his creations.