A rectangular brick wall or wall with six rows of tiles.

Brick Wall

A half body girl in a t-shirt, smiling while reading a book and waving.

Half Body Girl Reading Book And Waving

A physics equation reading "v = E = mc squared" against a rounded solid background.

A roll of film wrapped around a circular reel with holes in it. 

A half body woman with chin-length hair and glasses reading a book.

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