Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Neat

Neat as a nail.
—Anonymous

Neat as a new pin.
—Anonymous

Neat as ninepence.
—Anonymous

Neat as wax.
—Anonymous

Neat as fresh spring herbs.
—George Eliot

Neat as wax-work.
—Henry J. Finn

Neat as a postman’s knock.
—George Meredith