I find myself once again coming back to hummingbirds. Truly awe inspiring little creatures. I have been experimenting with connecting flapping mechanisms to music boxes. This is the most reliable and simple method have working for now. Just an angled wire shaft with loose wings and a bird body sculpted in place. I have made small brass pulleys to connect the shaft to the music box via a spring belt. I will make a few of these if they sell well. You can check these flapping automata hummingbird music boxes out for sale on my Etsy page. www.etsy.com/au/shop/Contraptioncart