Positioned near the register of gas stations, diners, and hardware stores, the take-a-penny tray is a small dish, usually plastic, sometimes ceramic, occasionally a repurposed ashtray, that operates on the last functioning barter economy in American retail. Its contents fluctuate hourly: a surplus after lunch rush, a near-drought by evening, replenished overnight by some unseen hand, or perhaps by the same three regulars who always seem to have exact change to spare.
The tray asks nothing of its patrons beyond honesty, and receives it more often than one might expect. Pennies enter dull and leave dull, having never been shiny to begin with; the tray is not a place where currency improves. Some trays bear handwritten signage, curling with age, reading simply need a penny? take one, leave one, a constitution more binding than most. Others sit unlabeled, understood by osmosis, a kind of tacit civic agreement passed down through a thousand transactions of one or two cents. It is, in its way, the last vestige of a monetary unit nobody quite wants but nobody can quite discard, sitting patiently by the gum and the lighters, keeping the peace between exact totals and whatever is actually in someone's pocket.