How to Collect Soul Orbs

Soul Orbs are necessary for character development, how are you all collecting them? Many of you might be collecting them through grinding, Mementos, or objects within Palaces, but you can also exchange leftover items from past events for Soul Orbs! To do this, go to the Menu Screen → Bag → Consumables. If this is news to you, give it a try! Sorry if you already knew this.