Contact a local cigar shop and ask for empty boxes. The boxes may be available for free or for a small price.
Considering the following characteristics:
Overall shape . An ideal box has low height relative to the width and depth.
Build quality . Choose a box that is sturdy and looks nice.
Panel thickness. This can be important. Many panel-mount controls and connectors are designed for metal panels, which are relatively thin. A thick wood panel can make it difficult to mount the controls. Try to find a panel thickness of less than 6mm (1/4 inch).
The enclosure used for this howto is a Padron 3000 26-cigar box.