Stand Examples
The following are some good examples of stands following the guidelines
I described.
Click on the images for a larger version.

The perfect setup: poster, book, physical demo, laptop, presentation.
The board allows the demonstration of
Voronoi diagrams
using nails and rubber bands.
This poster won the conference's best poster award.
(EURO XX)

A live hardware demo (MSAD 2004)

Closeup of the live hardware demo (MSAD 2004)

The perfect packing for the demo (MSAD 2004)