Souvenirs are items that you find in a dungeon and place it within your home. There are a total of 15 souvenirs in the game and each one has a specific area in which they spawn. Take a look at your house and check which ones you’re missing when comparing it to the pictures in the link below. Simply keep running the dungeons that the souvenirs you’re missing can be found in and eventually you’ll find them!
Found In Caeldippo Caves: 1 - 2 - 3 – 5 – 7 – 9 – 10
Found in Barahut: 8 – 11 - 13 – 14
Found in TerraLava: 4 – 6 – 12 – 15https://imgur.com/gallery/IHRxrXL
-The souvenirs are also not tied to any specific characters, all souvenirs can be found with any character of your choosing.