This Neck-worn Power Bank for the Vision Pro may be better than Apple's own battery pack - Yanko Design
Briefly

It's a rather heavy metal cuboid that's tethered to your headset, and the only way to elegantly store it while in use is to slide it into your pocket - leaving a sole wire that dangles from your head to your waist, coming in the way of your hand while you move around.
The Neck Power Bank assumes the familiar horseshoe shape of a neck pillow, a pair of sporty earphones, or one of those neck-worn air conditioners. The power bank boasts a fresh and ergonomic design that sets it apart from the rest.
Read at Yanko Design - Modern Industrial Design News
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