A bi-directional accessory attachment interface having an accessory attachment interface, wherein the accessory attachment interface is attached or coupled, at one or more attachment points/areas to an accessory to define a first vertical tunnel aperture proximate a first edge portion of the accessory attachment interface, a second vertical tunnel aperture proximate a second edge portion of the accessory attachment interface, a first horizontal tunnel aperture proximate a first edge portion of the accessory attachment interface, and a second horizontal tunnel aperture proximate the second edge portion of the accessory attachment interface, wherein a vertical tunnel is formed between the first vertical tunnel aperture and the second vertical tunnel aperture, and wherein a horizontal tunnel is formed between the first horizontal tunnel aperture and the second horizontal tunnel aperture.
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