My two girls, and the other children taking part, all put the toy food in composting as expected. But not my son. After the onion went down the plastics shoot, I stepped closer to check that he had understood the activity instructions correctly. He proceeded to put the banana in the plastic recycling hole, and I suggested that perhaps it should have gone into composting instead.
"No mummy, not that one. That's not a real banana, it's made of plastic."