A sentence for memento?

These small items are mementos of our holiday on the Continent

An Olympic swimmer got her first gold medal and kept it as a memento.

The best swimmer in the Olympics won a medal and kept it as a memento.A little girl got a beautiful box her mom gave her before she died and the little girl kept it as a special memento she will...

You could use it in the following way: "She took a napkin from the restaurant as a memento of their first date".

When it has a subject, verb, punctuation, capitalization, a predicate, and a complete thought. A sentence is a sentence when it is handed down by a judge (or a magistrate).