I've been in at least ten swaps of decorated and filled matchboxes. I know ten, because I bought a ten-pack of small matchboxes aw Wal-Mart and used them up--except for the wooden matches which I out in a jar, waiting for something creative besides using them to start our outdoor fireplace.
So I decided to take one apart and make a template so I could make my own out of sturdy cardstock as I need them for various creative endeavors.
This is the basic pattern. I use Hammermill 110lb cardstock from Staples , or Georgia Pacific 110 lb I found at Wal-Mart. I prefer the Hammermill because it seems a smoother finish, good for printing color images on.
These are some samples of templates that I decorated in Photoshop, ready to cut out, assemble and further embellish, or not.