I found what I thought was a good solution to traveling with these external drives for steam deck (sdxcs formatted in ext4 in usb adapters). I don't want them to bounce around too much in my journeys and they're also small and easy to lose. So I ordered some cheapo gameboy advance cartridge cases from ebay and cut off sections from an Amazon prime bubble envelope to put inside the cases. With the additional layer of padding, the sdxcs in usbs stay in place. After that it was a matter of labeling each box with the name of the sdxc inside.
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