Doesn't amount to a hill of beans

Origin

Imagine a humble farmer, planting his meager crops. Beans, cheap and plentiful, were often planted in small mounds or "hills" to optimize growth. A mere "hill of beans" represented the most basic, inexpensive sustenance—hardly a treasure, barely a meal. This image of agricultural insignificance, of something so common and of such little individual monetary value, quietly seeped into the American lexicon. It found its most famous moment, however, not in a field, but in a dimly lit Moroccan cafe, when Humphrey Bogart's Rick Blaine delivered the unforgettable line in "Casablanca" (1942): "The problems of three little people don't amount to a hill of beans in this crazy world." That one cinematic utterance cemented the phrase's meaning in popular culture, forever linking triviality with that humble agricultural mound.