Good cheer is a widow's cruse.
Give a cheery "Hello" and amuse
Just one, and that one,
Will share all the fun.
Good cheer is hard to refuse.

widow's cruse (WID-oz KROOZ) noun

An inexhaustible supply of something that appears meager.

[From the biblical story of the widow's jug of oil that miraculously replenished itself to supply Elijah during a famine. A cruse is a small earthen pot for holding liquids.]
per Anu