Loose item at the bottom of a fast-food bag, perhaps

FRY

Think of something golden and crispy that often escapes the container and ends up hiding under the wrapper.

This clue plays on the idea of something you might find left behind in a fast-food bag after eating—often a stray fry that’s fallen to the bottom. The word "loose" hints at something not part of the main meal, and "fast-food bag" points directly to fries as a common takeout item. It’s a straightforward definition with a slight misdirection, since you might first think of napkins or condiments before landing on the simpler answer.