A cloud with three overlapping files, an add button, a loopy line and a dot.

Cloud With Files, Swirly Line And Add Button

A plus sign in a circle or an add button.

Add Button

A shopping basket with a plus icon, or an "add to cart" icon. 

A square made of add, subtract, multiply and divide signs.

An account or add friend icon with a user and a plus sign.

A "watch or follow" illustration of a front-facing opened book with an "add friend" icon and a play button.

A simple heart icon inside a round speech bubble next to an add button represented by a plus shape in a circle.

A round avatar or profile picture of a smiling person with a ponytail and an add button.