Sanpiper
Steampunker
My idea's relatively simple; add chests as a (somewhat rare) drop from mimics (not including hallowed/evil mimics), which would make chests renewable.
Currently, if you want to use Shadow Chests to store items, you are limited to the small amount in the world, and while there are a larger amount of Golden Chests, it is still limited.
Each mimic would drop its own type of chest; a Golden Mimic would drop a Golden Chest, a Shadow Mimic would drop a Shadow Chest, etc, and the drop rate would be relatively low (perhaps 10%).
Currently, if you want to use Shadow Chests to store items, you are limited to the small amount in the world, and while there are a larger amount of Golden Chests, it is still limited.
Each mimic would drop its own type of chest; a Golden Mimic would drop a Golden Chest, a Shadow Mimic would drop a Shadow Chest, etc, and the drop rate would be relatively low (perhaps 10%).