>>2921470
>not that I can think of, bridals and collars historically are the only methods to secure the head of a beast, some cages that attach from the neck up to the head have been used but i do not think this is safe in the long term.
>party hats use elastic for safety

Rather than using the full-on brank, one might instead fasten a soft muzzle. The weight saving and softness should make it safe to be attached for long extended periods of time. The band of the ears would fasten onto the muzzle securing straps. Where the ear band crosses the strap would want to ratchet or otherwise accommodate for head overall head height or position on the head.

A snug arrangement to keep muzzle plus ears properly attached might take the rubber straps from a decent gas mask or industrial respirator as those are purpose designed for the right fit. Typically, individual straps which attach a full face respirator meet at spider arrangement which rests at the opposite, rear side of the head. The straps are soft, made of rubber and feature fast pull to tighten buckle clasps. With the ear band decently coupled to the straps, the ears should stay affixed in place in any situation.
https://www.ebay.com/shop/gas-mask-straps?_nkw=gas+mask+straps