* The Amazon rainforest is a bonanza of biodiversity, teeming with countless species of plants and animals.
* The new oil discovery in the North Sea promises to be a bonanza for the country's economy.
* The internet has become a bonanza of information, offering vast resources on almost any topic imaginable.
* The bustling farmers' market is a bonanza of fresh, local produce.
* The library's collection of historical documents is a bonanza for researchers.
These examples highlight how "bonanza" signifies a plentiful and valuable source. It can be used to describe both tangible resources like natural resources and intangible ones like information.