Some fungi have been instrumental in the development of human culture, including in the phylum as they have been in use for hundreds of years in producing beer and bread.

Yeast,
in phylum Ascomycota or Basidiomycota
 There are over 1500 varieties of Yeast. It has also been used in leavening of bread for several centuries.

Early 18th century british industries were generally small scale and relatively unsophisticated. most textile production, for example, was centred on small workshops or in the homes of spinners, weavers and dyers: a literal ‘cottage industry’ that involved thousands of individual manufacturers. such small-scale production was also a feature of most other industries, with different regions specialising in different products: metal production in the midlands, for example, and coal mining in the north-east.two illustrations of 18t

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.