Dronification are planned, I got two of them in the works. Leather pets... I know I do so much latex pets, but I'll soon try that. Pony play. Hmmm.... Now I got some for Chloe and Twilight's fun. Complete isolation play is another story.
Carousel Bondage, or mannequin bondage, where the pony is stuck to a pole and can't get off it and is usually bound in a way that prohibits movement as well so that they properly serve their purpose. Also stuffing ponies into life size stuffed animals of themselves is a good one, especially if they're diapered first so they can be there for a long time.