This is the pattern that got me thinking about short separating zippers:
This box pattern is designed by Aneela Hoey & you can easily download patterns from her website:
Comfort Stitching by Aneela Hoey
The construction of the pouch allows the pockets to expand when filled without things taking on a bulging appearance. In short it looks as good filled up as it does empty. The small one holds threads and the larger one keeps everything else needed for one project. They make a good team!
Another of Aneela's yummy patterns:
If you are in the Boston area, Gather Here (1343 Cambridge St, Cambridge, MA 02139) has fabulous classes on how to make Aneela's little boxes. And their website is: Gather Here