I like to avoid peripherals and accessories of the Raspberry Pi sticking out too much, resulting in a cleaner look. One of those things "bothering" me, is the SD card.
There are alternatives, such as the low profile microSD card adapter from Adafruit. Unfortunately, since it's thicker than a normal SD card, it does not always fit in the case.
That's why I modified my case to allow the use of such an adapter.
I carved out the bottom of the case to compensate for the extra thickness of the adapter.
I also had to provide a little more space in the other part of the case because the microSD sticks out a bit and is positioned lower than the normal SD card slot.
The result: the modifications made to the case are not visible from the outside and no SD card sticking out.