Spent way too much time looking for what I wanted on here and couldn't really find anything that was a good fit until I came across a remix of someone else's micro SD card holder (https://www.printables.com/model/434767-micro-sd-card-holder-doubled-remix), thanks @Athena. It was double-sided like mine, but I couldn't get it to work (it had some design issues). I also came across a micro SD card model (https://www.printables.com/@SDesigns_1112702), thanks @SDesigns_1112702. So I decided once again to just make my own design using that to build around.

Got to say, this was one of the “fun ones”, I just couldn't stop working on it. I guess I really love the challenge of super-micro architecture and all that entails. It's a real pain, but boy is it awesome when you finally manage to get those tolerances just right. Also, I think I'm actually getting better, definitely developing more of a feel for the idiosyncrasies of PLA at 0.2mm.

Anyhow, this is another modular design that gives you many options for how to use it. I made the links so that they can be detached and rearranged after printing (although it will print in place just fine). I'll let you all play around with it and see what else is possible.