Phantom Storage

A NeoForge 1.21.1 mod: summonable, ghostly flying pets that carry your stuff. The Phantom Chest holds items, the Phantom Tank holds fluids, and you can have both out at once.

Controls

Action	Result
Sneak + scroll with the Phantom Charm	Switch its mode: Chest or Tank (the charm's art changes to match)
Use the charm	Summon that pet, or recall it to your side if it's already out (5 s cooldown)
Sneak + use the charm	Dismiss that pet (same cooldown)
Right-click a pet	Open its storage
Right-click the tank with a bucket, bottle (water, 250 mB) or other fluid container	Pour into, or fill from, the active tank without opening the GUI; the action bar shows that tank's level
Sneak + right-click the tank holding a fluid container	Cycle the active tank
Sneak + right-click a pet (empty-handed)	Toggle stay / follow
Look at a pet ~½ s (while idle)	It comes within reach

In either GUI, hover any icon or gauge for a short description.

Chest:

Icon	Does
Sort (bars, after the title)	Click: merge stacks and sort. Right-click or scroll: mode (Name, Amount, Mod). Shift + click: ascending / descending (the bars flip). Saved with your storage
Trash (by the void grid)	Destroys everything in the void slots
+ (by the crafting output, JEI/REI only)	Opens crafting recipes; the viewer's own + fills the grid from storage and inventory

Tank:

Control	Does
Gauge, click with an empty cursor	Makes that the active tank (outlined)
Gauge, left-click with a filled container (bucket, water bottle, modded tank item)	Pours it into that tank
Gauge, right-click with an empty container	Fills it from that tank
Trash (under each gauge)	Destroys the fluid in that tank
Overfill checkbox (off by default)	Buckets on the tank: when the active tank is full or holds another fluid, pour into the next tank of that fluid or an empty one
Drain all checkbox (off by default)	Buckets on the tank: when the active tank is empty, keep drawing from the next tank until all are empty

Recipe: Phantom Membrane ×3 around an Ender Chest, Soul Campfire below, Gold Block in each corner. One charm summons every pet.

Unlocks: the chest is available from the start. Other pets unlock through vanilla advancements, with no extra recipes:

Pet	Unlocked by
Phantom Tank	Not Quite "Nine" Lives (charge a respawn anchor)

Until then the charm skips that mode. Creative mode ignores unlocks.

What you get

• 108 slots (12×9) of personal item storage and 4 fluid tanks of 32 buckets each, tied to you rather than to the pets, so they survive death, logout and dimension changes.
• A 3×3 crafting grid, with JEI or REI recipe fill when either is installed.
• A 9-slot void filter: the trash-can button destroys whatever is in it. Items left there when you close the GUI go back to you.
• The tank holds any fluid, modded ones included. It's tinted glass in a ghostly ender chest base and lid, with flapping phantom wings and glowing phantom eyes, and rings like amethyst when you open it.
• The tank shows every tank's fluid stacked inside its glass, each layer filling a quarter of the height, with the active tank on top.
• Buckets used on the tank work with the active tank only, unless you tick Overfill or Drain all in the GUI.
• Both pets float like an Allay: trail and bob while you travel, drift 2-5 blocks around and above you when you stop, then settle beside you at your foot level.
• Never render darker than a redstone torch (light level 7). With LambDynamicLights installed they also light their surroundings at level 7.
• One chest and one tank per player. Only the owner can open or move them, and only /kill can kill them.
• Pets are dismissed automatically on logout or dimension change; re-summon them with the charm.

Client config

Per player, in config/phantomstorage-client.toml or in-game under Mods → Phantom Storage → Config. Changes show at once.

Option	Default	Does
Opacity: All pets	100%	Multiplies the two values below
Opacity: Phantom Chest	80%	How see-through the chest is (10–100%)
Opacity: Phantom Tank	80%	The tank's frame and wings; glass and fluid scale with it
Glow: Phantom Chest / Tank	on	Never render darker than light level 7 (the tank's eyes always glow)

Light cast onto surroundings comes from LambDynamicLights and is toggled in its own settings.

More stuff planned later :)