I just had an hour of free time and started messing around with some fleece and got a really nice cube house out of it! I'll try my best to describe what I did.
1. Cut 7 sqaures of fleece in the size you want the house to be
2. sew five together so that they form a plus sign.
3. Stack the last two on top of each other, cut out a circle throught both the stitch it togther. Pull one side through the circle so that the seam is hidden.
4. Stitch this to one of the other sides, making it look like a T
5. Start stitching the cube together so that all of the outside is seam-less. When you get to the top, cut four small strips of fabric, fold them, and like the ends up to each corner of the top of the cube (these will be for the hooks).
5. Turn right side out so all sides are seemless and stitch on the outside down all edges to that the seams are consealed within the house.
Sorry if that was confusing, I just kind of messed around with it until I got it all seamless. I'll post a pic of it later.