To help someone remember something.
Jog your memory
To have memorized something completely.
Know something by heart
To erase or forget something, often a bad memory.
Blot out
Thinking or talking about past memories, often happily.(idiom)
A trip down memory lane
To push down or hide a feeling or memory.
Suppress
When many memories suddenly return strongly.
Come flooding back
To try very hard to remember or think of something.
Rack your brains
To talk or think about past experiences with pleasure.
Reminisce
To bring a feeling, memory, or image into the mind.
Evoke
To sound familiar or trigger a vague memory.
Ring a bell
To forget things easily.
Have a memory like a sieve
A sentimental longing for the past.
Nostalgia
Continuing for a long time.
Lasting
Memories or things remembered.
Recollections
To cause someone to remember something.
Remind