Souvenir (noun)

1. An object or piece of memorabilia that serves as a reminder of a place or event.
2. A gift or item of memorabilia that is purchased as a reminder of a place or event.

Origin:

Early 19th century: from french, literally "a remembrance", from se souvenir "remember".

Examples:

1. He bought a souvenir to remember his trip to Paris.
2. She collected souvenirs from all the places she visited.
3. The shop sold a variety of souvenirs, from postcards to keychains.
4. He gave her a souvenir of their first date.
5. The souvenirs he brought back from his travels were a source of wonder for his friends.