This is how we made the castle... Weeks before the party we picked up three refrigerator boxes from an appliance store. The store was very accomodating and gave the boxes to us at no cost. I made castle towers out of all three keeping the middle box larger than the two others which I cut smaller. I then painted all three boxes with gray poster paint. I suggested stones with black paint. We cut a door out of the larger middle box along with a higher window above the door. For the two towers on either side of the center we cut matching windows. On the door we painted a ring (from an old ring toss game) black and attached it as the door handle with some old hardware we happened to have lying around. The door was painted brown. We bolted the towers together with screws (covered with duct tape to avoid any injuries!!) and cut passageways so the kids could move between the boxes (towers). I cut two banners out of purple felt and glued a simple crown design out of white felt to one and a tiara for the queen out of white felt to the other purple banner. We draped these banners out of the windows of the two side towers. I made a third banner out of the purple felt with a fancy "D" (our last name initial) with a crown over top. We hung this banner from our porch on the day of the party. This sounds like a ton of work, but we constructed and painted the castle in one morning.