I cannot remember who was teaching this at the Origami USA convention a few years back (2006? 2007?), but I seem to recall it was brought to New York by the Brazilian group. It was a huge hit because it holds models so nicely for gift giving.
Step 1: Assemble parts
1. Coke bottle of correct size (see Step 2 for selection process).
2. Sharp pair of scissors.
3. Rubber band (optional if you feel confident in your cutting precision).
4. Marker (also optional)
5. Fabulous gift to put in the container once it's complete.
Step 2: Obtain the correct type of Coke bottle
Sadly, the tiny size bottles (I'm not sure of the volume, but they look like a squat version of the medium and large sizes) don't work. If you discover a way to make the tiny ones work, PLEASE let me know!