Arduino UNO case with lid.

thingiverse

Protect Your Arduino Uno with a Custom-Made Box Enclose Your Make Project from External Interference by Building a Protective Case. This box was specifically designed to stack multiple prototype or shield boards, offering ultimate flexibility in your project. Follow These Steps to Assemble Your DIY Box: Tailor the Z Axis for accommodating several stacked shield boards if necessary. Scale up accordingly. Print using raft and supports with an infill of 35%. You can choose any material you like. Make sure to file the power and USB holes for a smooth fit, as the case may be quite tight depending on your printer's capabilities. Secure Your Board The custom box provides a very snug fit. Use two or four #6 X 1/4" sheet metal screws to securely attach the board to the enclosure. You can also fasten the cover by inserting screws through the sides of the box if needed, offering even more stability and protection for your Make Arduino Uno.