Great article. I made a few not long ago and had an idea to use one as a basic sewing kit. It seems to work pretty well holding needles and several feet of thread.
You can view the page at http://www.bushcraftuk.com/forum/content.php?r=368-Cartridge-Case-Matchbox
Hmm, that got me thinking. I must sift throught the "brass-bucket" by the rifle range for something suitable for needles. The bone cases are nice, as are the wooden ones, but neither is supercompact, and the small plastic cases that leads for automatic pencils come in loose the lids.
Get a .223 and .357 mag. The needles go into the .223 and the .357 mag goes snugly over the top - a perfect friction fit needle case