Every traveler has been subjected to the blitz of souvenir stores filled with junk. A better option is to purchase an original painting created by street artists who, for a few euros or dollars, capture the location.
Since the picture is unframed and flat, it takes up virtually no suitcase room (a big consideration with all the “baggage hoopla” nowadays). Arriving home with your treasure, go to the local craft store, buy an inexpensive frame and viola! You have a pictorial memory that was easy to pack and will bring back memories for a long time.
Pro tip: Take a photo of yourself with the artist, paste on back.