There was already a comforter in the box, one side a plush fabric, the other brushed cotton sheeting. I took it apart, and the sheeting has appeared quite a bit in the main quilt. The plush side, I'd managed to keep in tact. After the main blocks were made, I pieced some pieces together to form one side of the comforter and added some cotton batting.
Making up the comforter, was an easy process. With the two sides, right sides together, I sewed around the edges, leaving a gap for turning. Once it was all turned the right way, I folded over and pinned the opening. Stitching just inside the outer edge around all four sides has closed the opening, and stabilised the whole comforter.
I can testify that it will fulfill the brief, it's very tactile. It is next to my computer, and it's just shouting to be stroked. Now these extra bits are done, it's time to concentrate on the main quilt again.