A tiny four-line poem about being grateful for a full table and a full world. Its brevity and gentle rhyme make it an easy one to learn by heart.
From A Child's Garden of Verses. See the whole collection.
It is very nice to think
The world is full of meat and drink,
With little children saying grace
In every Christian kind of place.
Public domain. Text from A Child's Garden of Verses (Robert Louis Stevenson, 1885), via Project Gutenberg. View the source edition