Strawberries
Strawberries are the main type of collectible in Celeste. Littered throughout most of the chapters, these floating berries really tend to increase your death count. They lock in when the strawberry "feels safe." Once you secure a strawberry, it stays cashed in for the entire level.
There are two types of strawberries—regular looking and flying. The flying strawberries will fly away if you dash on their screen. Sometimes you need to dash to trigger its flight so you can intercept it. Strawberries do not unlock anything in game.