I have a lot of SD and MicroSD cards (I have 16MB more!) most of which have only ever come in ZipLoc packaging and I have no idea what's on them or which ones I have if necessary I do not check them all. Most of them come pre-installed with things for different Raspberry Pis (different operating systems, projects I'm working on with IoT devices, OctoPrint for my 3D printers, PiHole, etc.). I bought a set of these sleeves and labeled each one so now I know what's on each card if I need to change something! Oooh! And they weren't expensive, so I bought a bunch. Now not a single card is left in your pocket without a label or basic protection!
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