Cartilage from the tragus, perichondrium from the tragus or concha, and fat from the lobule are frequently used for reconstructive surgery of the middle ear.
I think that's what makes the nature of memory being so reconstructive, and not photographic, is that the hippocampus just doesn't have the capacity to store any details.
I had reconstructive surgery after reconstructive surgery and constantly being in pain and addicted to pain medication, kind of got to a place where I realized, you know, maybe amputation is a good option.