Raspberry Pi 2/3 case with room for extras

I designed this Raspberry Pi enclosure for my Octoprint server. The Pi receives its 5.1 volts power via the 40-pin connector from a buck-boost converter (XL6009, two coils) that is soldered to the flip side of a 5 x 7 cm single-sided perfboard. The converter also powers directly an extra pair of USB sockets that are only connected to the 5.1 volt rail.

I'm running the Pi from a 120 GB USB SSD drive, which came with a Y cable (split power and data) so this avoids running its supply through the Pi’s mainboard.

The buck-boost converter is able to maintain 5.1 volts output over an input range of 4 - 32 volts with high efficiency. I wouldn’t run it at its (claimed) 4 amps rating though ...

The opening for the Pi camera cable is a slit that extends through the upper shell into a thick guide block that maintains some integrity for the enclosure. You can put the upper shell in place or remove it by sliding the flat cable in or out without unplugging it.

Opposite to the HDMI and aud