I was a Home Depot today with my family when I found some soft, poly rope in bright colors. I decided to buy a blue and green one for this purpose:
As you all know, I have learned how to make model-horse sized rope halters over the past month. But, I have had an itch to try to make some for my mini's. They need quite a bit of work (the bulky knots at the muzzle I really dislike) and the rope along the cheekbone needs proper placement, but all in all, I think I made some pretty good first prototypes.