Have and idea for a small board for you. Get a hanging ceiling tile and cover it with batting and flannel. Its light weight and you can cut the tile to the size you want. Need to give credit to Joan for the seed that helped me come up with this.
Years ago I took a landscape class with Joan Statz creator and owner of "Joan's Own Creations". We made our own pressing boards. I have a very small sewing room and used the same idea to make a design board. Works well for me.