A remix of the SD card adapter holder by cooker2003. Made a few adjustments to the size of the back "chamber." Also adjusted the opening hole to fit my SD card adapter head, linked below. Lastly, added three SD card holder slots on top and a hole on the side for the USB port.
SD Card Adapter: Link may not work. So I put a screenshot above of adapter. https://www.amazon.com/Extension-Adapter-Flexible-Extender-RS-MMC/dp/B06X3Y4BBB/
NOTE Both files have the same dimensions, the mini one just has the text "Mini" put on it.
Printed with top surface up for better top finish. This meant that there was more supports on inside.