She kept the seashell as a souvenir of their beach vacation.
keepsake
Frequency:
70
%
The locket was a cherished keepsake from her grandmother.
reminder
Frequency:
65
%
The old photo served as a reminder of happier times.
token
Frequency:
60
%
He gave her a small token of his affection.
Idiomatic Expressions for memento
Phrase: memento mori
Meaning: a reminder of mortality or the inevitability of death
Usage: The skull on his desk served as a memento mori, reminding him of the fleeting nature of life.