Shelves for small containers
Little shelves to hold 30 small containers http://www.thingiverse.com/thing:12177
(24 of 30mm and 6 of 40mm height)
I made it with 3mm plywood and 5mm acrylic for the sides.
So, feel free to adapt the file before cutting regarding what you choose and its thickness.
There is also a second model for 20 containers (540mm and 1530mm) in 5mm material, that you can make or order through Ponoko here : http://www.ponoko.com/design-your-own/products/shelves-for-small-containers-5x4--6529
(Btw I used this plugin for the second design : http://www.instructables.com/id/SketchUp-Inkscape-and-Ponoko-Laser-Cutting/ and it was easier than with Illustrator :p)