Souvenir is also the name of a Broadway play about Florence Foster Jenkins

A souvenir (from French, for memory) is an object that is treasured for the memories associated with it. This is analogous to the psychological exploitation of classical conditioning. For example, if a traveller buys a souvenir on a memorable vacation, he or she will most likely associate the souvenir with the vacation. Every time he or she looks at the souvenir, it reminds them of the vacation.