I finally made the other two bird bowl towers. The hard part was deciding colors. It was then that I looked over at my couch and noticed my pillows I finished sewing two weeks earlier. A light bulb went off and I thought to myself, "Why don't I do pink and orange to match the fabric and color scheme I am going for."
Here is a picture of the towers before I painted or sanded. Finding fillers weren't very hard since I am on a bird kick, so I found things that relate to birds.