Summary

This small trinket box is very similar to a sample box my kids got at a Maker Faire a few years ago from Epilog Laser. I found a similar pattern on the Epilog web site but was unable to adjust the material thickness and box size. This item is modeled with OpenSCAD so that the dimensions can easily be changed for different size boxes. You can try changing the size of the box using the Customizer button but to get the DXF output you will need to download OpenSCAD and export the DXF file on your local computer.
Here are the steps to do that:

1. Install OpenSCAD
2. Download and open the .scad file from Thingiverse
3. Edit the first few lines of the .scad file in OpenSCAD to get the size and thickness you want
4. Select "Design"-"Render" from the menu (or press the F6 key in OpenSCAD)
5. Select "File"-"Export"-"Export to DXF" to save the flat pattern

I did not include the decorations in the files for this thing but the designs I used are available at http://www.craftsmanspace.com/ Craftsman Space is s great resource for vector images for laser cutting. Most of the designs there fall under some form of the Creative Commons license. The specific designs I used came from these two collections:
http://www.craftsmanspace.com/free-patterns/rectangular-ornaments.html
and
http://www.craftsmanspace.com/free-patterns/floral-design-elements.html