Hi! So we've moved, and bought our first home!! Because of that we build a more permanent structure for our girls to be in at night. I'm eventually going to trim it out to match the room, but this is it for awhile! I used water resistant plywood and 2x2 and 1x3 for the frame, tiled sticky-back linoleum inside and caulked it. Then I repurposed Sams original cage ( before I knew any better!!) as the front wall and the entry, worked out perfect!!!
It's 4x4 with about 2sqft cut out for the angle, so it wouldn't be any good for long periods of time but should work for night time.