Here are a few more extra heads for the Dummy 13 and Lucky 13 figures by https://makerworld.com/en/u/3527201093
I have another set avaiable for download here: https://makerworld.com/en/models/219486
They're basic but fun!
All models are free for commercial use but if you like to support me you can here : https://paypal.me/delibelli