Make Reactor (2 chests at screen 2, there is an opening to walk on the pipes, one of them requires flutter, the other one is a mimic under the stairs). I guess because during my blind run I never expected this dungeon to have any chests lol since I never encounter any). The chest is on the right side of the roof, obscured by some seaweeds). Sunken Temple (screen 2, West side of the map, where you have to climb one of the walls. Sunken Temple (screen 1, on the left outer wall of the bridge, the chest rests horizontally). Train Graveyard (screen 5, a hidden path near the end that go thru a cart).

Train Graveyard (screen 1, hidden behind a cart near the end before transition to the next screen). Balamb Garden (Easy to miss, behind statues) I suspect it was due to a main story cutscene?) Nonary Region (Not sure how I missed this. Here are the chests I missed in my blind run: Apparently I've been playing as Chibi form for most of the game, so I've been missing a lot of chests that are in towns that can only be opened with Jiant form.

Brandelis world of final fantasy guide