Vertical Rigs

Most rigs people construct a vertical rigs for two reason:

here is vertical rig constructed by Rodrigo Silva
 * 1) Those rigs take less space
 * 2) Gravity holds all elements of the rig together. If there is enough friction between a film holder and a light source, the system becomes more or less stable.

Here is a vertical setup by Richard Karash. Cut a hole in an old cabinet, point flash up vertically.