Better Crates Mod 1.14.4/1.12.2 is a crates improving mod that increase storage as well as retaining the contents after being destroyed. It also converts crates into a higher level ones in Minecraft.
The available crates are varied in appearance and storage. They include wooden crates (36 slots), copper crate (45 slots), tin crate (45 slots), iron crate (63 slots), golden crate (81 slots), diamond crate (117 slots) and obsidian crate (117 slots).
Obsidian is the most durable material in Minecraft, which is used in many item upgrade mods. In better crates mod, it is the only type of crates material that is resistant to explosions and also provides the largest area of storing.
So if you are looking for something that replaces the ordinary chest and inventories. You should have a look at Better Crates Mod 1.14.4/1.12.2.