Apple iPod Shuffle (4th Gen) holder for work badge lanyard

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I designed a holder for my 4th Generation iPod Shuffle by creating a rectangular cube that perfectly fit the device's size. The cube was then wrapped around with no tolerance, resulting in a snug fit when printed vertically. This design allowed the walls to flex slightly and hold the Shuffle firmly in place. After using it for a month, I added a hole at the bottom to prevent crumbs from accumulating inside. To attach it to my work badge lanyard, I simply slid one cord into the holder at a time, gently pushing it aside to make room for the other cord.