A case for the most generic USB drive PCB, like the one found in pendrives that look like this: https://www.google.com/imgres?imgurl=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F71HDM0Knz3L.AC_SL1500.jpg&imgrefurl=https%3A%2F%2Fwww.amazon.com%2FFlash-Drive-Memory-External-Storage%2Fdp%2FB081TFP1VM&tbnid=tCPa2QZnMK5ZMM&vet=12ahUKEwjmrZC_ubz1AhULuCoKHTBeCSQQMygGegUIARDbAQ..i&docid=hQGut-Y1qTxlvM&w=1500&h=1112&itg=1&q=flash%20drive&client=firefox-b-d&ved=2ahUKEwjmrZC_ubz1AhULuCoKHTBeCSQQMygGegUIARDbAQ, this https://www.google.com/imgres?imgurl=https%3A%2F%2Ff01.esfr.pl%2Ffoto%2F1%2F4645973142%2Ff5c48518762ee7c9a0c903000b3c61cb%2Farchival-emtec-usb-2-0-flash-drive-c400-32gb%2C4645973142_8.jpg&imgrefurl=https%3A%2F%2Fwww.euro.com.pl%2Fpendrive-pamieci-usb%2Femtec-usb-2-0-flash-drive-c400-32gb.bhtml&tbnid=8i4Y69knUlpguM&vet=10CCwQMyh5ahcKEwiY2ePNubz1AhUAAAAAHQAAAAAQAg..i&docid=qNVSX7LkgibLSM&w=580&h=514&itg=1&q=flash%20drive&client=firefox-b-d&ved=0CCwQMyh5ahcKEwiY2ePNubz1AhUAAAAAHQAAAAAQAg, or this https://www.google.com/imgres?imgurl=https%3A%2F%2Fwww.proshop.pl%2FImages%2F915x900%2F2283080_c6132ae8ac03.jpg&imgrefurl=https%3A%2F%2Fwww.proshop.pl%2FUSB-Stick%2FIntenso-Rainbow-Line-USB-Drive-8GB%2F2283080&tbnid=P1Zvlwe7i9TdrM&vet=12ahUKEwiBt5Peubz1AhVbCHcKHc80DCoQMygDegUIARDEAg..i&docid=MruJG9kVG6R4EM&w=915&h=900&itg=1&q=flash%20drive%20intenso&client=firefox-b-d&ved=2ahUKEwiBt5Peubz1AhVbCHcKHc80DCoQMygDegUIARDEAg Keep in mind that those are a typical case of a Chinese knock-off of a knock-off product, so it is the appearance and not the brand that matters when looking for one, and they should have the same board size, which is 50x14,5x4,6mm or less. Also this case is not very practical, it is mostly made for the aesthetic puposes - it is big and pointy, so it's a bit unpleasant when worn in a pocket or bag. You might need to sand the edges of the board a bit due to a different manufacturer. Fix the flash drive in with clear epoxy making sure it is aligned with the cap. You might be able to use UV resin, but only if you use undyed clear resin for the body, it doesn't work with heavily dyed ones, I tried.