Memento

noun

1. one object or item that serves to remind one of a person, past event, etc. I think from that standpoint, keepsake on objects is a souvenir.
2. Any word serving as reminder or warning.

Example:
They provided tea, a smoke, and the Egyptian flag as a memento. “They are not able to keep the tradition alive with their actions.

Dictionary. com (

no1)) is probably most relevant here, even using the word you mention.

Memento

noun

1. one object or item that serves to remind one of a person, past event, etc. I think from that standpoint, keepsake on objects is a souvenir.
2. Any word serving as reminder or warning.

Example:
They provided tea, a smoke, and the Egyptian flag as a memento. “They are not able to keep the tradition alive with their actions.

Dictionary. com (

no1)) is probably most relevant here, even using the word you mention.

Memory Trigger

Is a rather self-explanatory answer but to those who doubt it, this phrase is used: Ngrams Those

who were given the cassis smell remembered more details about the film and found their memories more unpleasant and arousing than those who had the background music as a memory trigger was equally effective.

A more mystical

memento of a classic item that a person would keep on a mantelpiece. ( Telegraph )

Memory Trigger

Is a rather self-explanatory answer but to those who doubt it, this phrase is used: Ngrams Those

who were given the cassis smell remembered more details about the film and found their memories more unpleasant and arousing than those who had the background music as a memory trigger was equally effective.

A more mystical

memento of a classic item that a person would keep on a mantelpiece. ( Telegraph )

Memory Trigger

Is a rather self-explanatory answer but to those who doubt it, this phrase is used: Ngrams Those

who were given the cassis smell remembered more details about the film and found their memories more unpleasant and arousing than those who had the background music as a memory trigger was equally effective.

A more mystical

memento of a classic item that a person would keep on a mantelpiece. ( Telegraph )

Memory Trigger

Is a rather self-explanatory answer but to those who doubt it, this phrase is used: Ngrams Those

who were given the cassis smell remembered more details about the film and found their memories more unpleasant and arousing than those who had the background music as a memory trigger was equally effective.

A more mystical

memento of a classic item that a person would keep on a mantelpiece. ( Telegraph )

‘The distant murmur of traffic’ ( Oxford Dictionary) An more relevant example can

be, that the murmuring crowd
was distracting the speaker, and

that some people could

also hear the squealing noise.

Or, as noun: A

murmur of agreement spread through the crowd at the suggestion.

Why do I get questions?

‘The distant murmur of traffic’ ( Oxford Dictionary) An more relevant example can

be, that the murmuring crowd
was distracting the speaker, and

that some people could

also hear the squealing noise.

Or, as noun: A

murmur of agreement spread through the crowd at the suggestion.

Why do I get questions?

‘The distant murmur of traffic’ ( Oxford Dictionary) An more relevant example can

be, that the murmuring crowd
was distracting the speaker, and

that some people could

also hear the squealing noise.

Or, as noun: A

murmur of agreement spread through the crowd at the suggestion.

Why do I get questions?

‘The distant murmur of traffic’ ( Oxford Dictionary) An more relevant example can

be, that the murmuring crowd
was distracting the speaker, and

that some people could

also hear the squealing noise.

Or, as noun: A

murmur of agreement spread through the crowd at the suggestion.

Why do I get questions?