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

Plentiful

Plentiful as bacteria in bad butter.
—Anonymous

Plentiful as sage brush in the desert.
—Anonymous

Plentiful as shingles on the shore.
—Anonymous

Plentiful as wells in the Old Testament.
—Anonymous

Plentiful as plebeians in Oxford Street.
—Samuel Warren