Line, pattern, and balance with the repetition of the metal shelves.
Value with the dark brush tips and the light base. Balance with the amount of brushes
There's shape with the large and small dark circle, and then with the light rectangle. Then there's balance with them offsetting one another. Then there's also emphasis on the large circle.
Color is shown with the multicolor pencil sharpeners. Then there's balance between all the sharpeners, and they all come together to unify.
There's the circular shape of the meter and then there's the cut off rectangle of the poster. They both come together to balance one another. Then there's also an emphasis on the meter.
You can see the texture of the fraying on the bone. Then there's also an emphasis of the hole in the skeletal bone as well.
There's the rectangle shape of the brick and the cylindrical shape of the pot. Then they balance one another out and come together to unify.