They used the clay for their pottery.
ABSOLUTELY
In the area they lived in, the clay was all around them. The ground was a clay type soil so that all they needed was water to active it and create the adobe/mud that made up the walls of the dwelling.
The Mojave made clay pots
Tandoori
Basic Instruction for Clay Shooting
Gun Safety and Etiquette for Clay Shooting
Clay Shooting for Women - Introduction
Correct Clay Shooting Firearm for Women