Most in production are toys aimed at hobbyists and enthusiasts. Enthusiasts in the United States have formed clubs which unite hobbyists and professionals. As of 2017, domestic 3D printing was reaching a consumer audience beyond hobbyists and enthusiasts. Fulgurites are popular among hobbyists and collectors of natural specimens. Dollhouses for hobbyists and collectors are available in different forms. Fusors have also become very popular for hobbyists and amateurs. There are many cameras still in use by film students, hobbyists, and other amateurs worldwide. There have been many instances where hobbyists and amateurs have achieved significant discoveries and developments. It Yourself kit that hobbyists and technicians assembled themselves. Studies have also found that crowds are not simply collections of amateurs or hobbyists. Early satellite television receiver systems were largely constructed by hobbyists and engineers. It is helpful for schools, hobbyists and garage inventors. Such languages are often popular among hackers and hobbyists. Potters around the globe provide material to hobbyists and specialists in many countries. This is a list of early microcomputers sold to hobbyists and developers.