Various trinkets, without which our life is not so sweet and joyful.
Sometimes a gifted keychain or postcard changes the mood and attitude towards a person.
Knowingly they say it is important not a gift, but attention.
The souvenir can be presented for any holiday with or without.
It's not so much a useful thing as a reflection of your attitude towards a person.
You want to cheer up - give a funny thing that makes you smile.