Assemblage is an artistic form or medium usually created on a defined substrate that consists of three-dimensional elements projecting out of or from the substrate. It is similar to collage, a two-dimensional medium. It is part of the visual arts, and it typically uses found objects, but is not limited to these material:  Wikipedia 
 
A wonderful way to stop the world and get off.  Some of my works are below. 
 
I offer assemblage workshops.  Email me for details :-)
 
A little nonsense now and then, is cherished by the wisest men. -    Anonymous