Shopper's reminder

LIST

Think of what you might jot down before heading to the store to avoid forgetting essentials—it’s often written on paper or in an app.

A "shopper's reminder" is simply a list of items someone writes down before heading to the store. The word "list" fits perfectly because it’s the most common way people keep track of what they need to buy. There’s no hidden wordplay here—it’s a straightforward definition where the clue describes the answer directly. Think of the sticky note on your fridge or the app on your phone that holds your grocery items.