Box with sliding lid

thingiverse

This is a straightforward box with just one compartment but features a screw that adds an extra layer of security. The lid shuts tightly on its own, however you can use the screw to guarantee it's securely locked in place every time. I opted for "Class 4.8 Steel Machine Screw, Zinc Plated Finish, Pan Head, Phillips Drive, Meets DIN 7985, 5mm Length, M2-0.4 Metric Coarse Threads".