16:43 Nov 10 

Although Shaker Boxes and Carriers are mainly decorative today, they were originally a working box. The Shakers used them for storing kitchen ingredients to shop supplies. They were economical to build and they stored easily as you could nest a whole set in the space of the largest box.
http://www.shakerboxesnb.com/

compare the pictures of the Shaker Boxes at this link and those from the link in the question.
in this instance it is boxes made in the style of the Shakers that are being referred to.

12:39 Nov 10 

What's a Shaker Box?
Shaker boxes are embellishments that add interest to a scrapbook layout or other craft project. Usually made from card stock with a clear acetate "window", the shaker box is a 3D box-like element that contains small objects that roll around and move when the viewer shakes the box or the layout.
Suggested fillers for shaker boxes include small beads such as micro beads, sequins, confetti, washed and possibly colored sand, crumbled bits of potpourri, tiny or broken sea shells, tiny seeds, dried herbs, or anything else small enough to work.
One word of caution; if you are using items such as potpourri, seeds, dried herbs or flowers, these items are not acid free and will eventually rot your card stock. To avoid this happening, use cold laminate (or clear shelf liner) to line the inside of the box.
http://www.squidoo.com/shakerbox

Здесь же есть ссылка на видео, где показано, как сделать простейший shaker box.