Arduino Uno Tray and Slip case - no screws needed.

thingiverse

This design is optimized for flexible filament, but if someone wants to experiment with rigid filament, let me know how it functions and I may try it out myself in the future. A compact tray protects the Arduino Uno from impact damage and prevents the prongs on the back from scratching work surfaces. The package includes a matchbox-style slip cover that keeps dust, lint, and other debris at bay. Secure tabs hold the board firmly in place within the tray section, eliminating the need for screws. For users who want to customize the package, I have included the SketchUp files.