Kids being silly, like kids should! All of these horns are available on my website, (the one on the right is going to be added soon to the shop, I have the photos, just need to post them).
Thank you, everyone! Yes, the blue horns, on the boy, are Malice III's, (worn "backward" in this photo). All of my non-prosthetic horns come strung on a clear elastic cord. [link]