Firm translucent plastic with a smooth surface and rubbery feel.
About this Product
This is a little tiny vase, about 50mm or 2 inches long. It happens to mechanically fit into the side USB port of my monitor. Of course this use is not recommended since it might cause damage, and I don't know how long it will "hold water".
Only order it in the "Detail" materials (shown is "Transparent Detail"). It carries the little logo of my experimentation activity. If you'd like it removed or apply your own logo, you have the following options: (a) create one yourself, it's easy (b) go to thingiverse* and modify yourself (c) contact me; if I have time I could customize it for you...
*You can download the Sketchup and STL files from www.thingiverse.com/thing:3728
Update: my friend s3gfault announced on Sept. 18 2010 that he is thinking about writing a Linux driver for the USB-Vase ;-)