This housing is designed to hold a Pi Zero and camera board in a compact streamlined shape. It slides together and doesn't require any screws. The SD card is not accessible from the outside to protected it and prevent loss should it be ejected on impact.
I've base and clamp are printable without support. The top piece is designed to print upside down and may benefit from a small amount depending on how your printer/filament copes with overhangs.
Cherry Pi IIIs with Duet v0.8.5
0.3mm first later then 0.2mm
Models were sliced with Cura 15.04.6