A simple and functional case for your STM32 Nucleo board with an embedded logo lid that clips onto the base. 
The board can either be simply placed inside the bottom part of the case or be secured in place with the included rings (XY hole compensation may be needed during print). 

The Lid is found in "Other files" as a .zip file. You can extract and import the 4 parts as a single object into your slicer. 

Print settings:
Material: PLA
Layer height: 0.2
Walls: 2