A list of 50 objects I found discarded near the roadside between Seville and Salamanca:
Tin cans, a saucepan, plastic drinks' bottles, glass beer bottles, cigarette butts, cigarette packets, crisp packets, yoghurt pots, newspapers, magazines, a traffic cone, an oil drum, tin foil, car tyres, car wheel trims, plastic bags, broken glass, sweet wrappers, local election posters, condoms, women's tights, a sandal, assorted articles of clothing, tissues, waste building materials such as bricks, tiles and concrete, broken crockery, cardboard cartons, olive oil containers, lottery tickets, rubber hosing, wire fencing, CDs, a girl's doll, a length of rope, a car seat, a microwave, a metal sign saying 'Coto Privado de Caza', a mattress, a bird cage, a plastic bucket, paint tins, a briefcase, a sun lounger, a kitchen chair, an electric lamp and shade, a plastic lunch box, a cash register, a lavatory bowl, a dead dog, a dead goat.
The most numerous items were Coca Cola cans and bottles. So congratulations to the USA for winning this one!
(Posted from Zamora, on the Vía de la Plata, Spain.)