I made this box as a gift for a friend who makes flower medicine.
The box itself is made with makercase.com
Just type in the dimension you want, and the website will make the files for you. I used 0.08 as the kerf, which I found out to be the tightest fit (read: http://valby.copenhagenfablab.dk/projects/angela/kerfs-tabs-and-holes-w-...).
When the lid is on, it's very difficult to open. If I should make it again, I would remove the tabs on 3 of the sites for the lid, making it easier to open.
The flowers on the sites are made with Illustrator's pen tool, and are holes. The text on the lid is written with the text tool.