The trick is to always keep roughly a year worth of corn stored, and only sell off the excess.
After the initial 'getting the base running' I usually pay merchants that accept it in corn, up to the amount where they end up giving me all their silver on top of what I wanted to buy.
Two years in and providing a USB-C adapter my wife is still complaining that her current phone doesn't have a headphone jack.
For my daughter I selected the phone mostly for repairability combined with colour choice, which landed me with Nokia - which ended up having a headphone jack. Didn't pay attention to that, but she's happy it is there.