Both are made out of fleece, and have zippers on the bottom so the covers can be removed and washed easily.
The couch sewn of the same idea of our couch, just shrunk down. I gave it structure by rolling some quilts around a pool noodle, and the bottom is many layers of folded blankets.
The nest bed is a doughnut shape with a thick bottom. The sides have structure by rolling a blanket around some flat foam, and then stood up like a doughnut, and the bottom again is filled with folded blankets.