Sculpted Primitives
From Dreamworld Virtual World
Sculpted primitives aka sculpties were invented as a substitute for 3D mesh objects but never became successful caused by a lack of quality, detail and support. They are still in use today as we are in a phase of moving from prim building with objects inside of simulated environments to using mesh objects. Several software developers have created export plugins within their programs as there is still a great deal of demand for easy ways to produce sculpted objects.
For those who don't have any form of experience with 3D modeling, the sculpted prim can be useful in gaining insight and knowledge on the aspect of creating models and applying textures to them. A good way to start is to try out a program named PloppSL created by the university to teach children about 3D models.