The phrase "golden geese" is often used to refer to a source of great wealth or success. If you're looking for synonyms for this phrase, there are plenty of options to choose from. Some common alternatives include "cash cow," "meal ticket," "gravy train," and "golden egg." These phrases all suggest a source of reliable and lucrative income. Other possible synonyms for "golden geese" include "money machine," "treasure trove," "pot of gold," and "gold mine." Whatever term you choose, the idea is the same: a valuable resource that can lead to significant financial gain.