Wall art made out of toilet paper rolls. This could be really cool for the guest room, painting the toilet paper rolls light pink or purple and maybe putting some pretty patterned cloth in the background.
Walk in Closet Organization - master closet. shelves above, drawers below, hanging racks in middle. --->this would work in the house that I want, too! Maybe make the small bedroom into a master closet?
Turn a kid's closet into a reading nookor a cute little hidden bed. Like sleeping in a fort every night. Love this for a guest room, for the kids. you could make the bed a Murphy style, so it could still be a closet when needed.