An irregular big fluffy cloud with a linear stroke. 

Cloud

A fluffy horizontal cloud with a flat top and bottom and curved edges, with a curvy line coming out of it.

Cloud With Curvy Line

A fluffy horizontal cloud with a flat top and bottom and curved edges.

Test tube or vial filled with medical liquid, blood sample, potion or other fluid.

Two large big fluffy clouds behind a round sun.

An overhead ceiling lamp or fluorescent light.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.