The Warehouse

In short: Every city has a Warehouseman who keeps a box of 40 items for you, in two tabs of twenty, and one shared purse of gold; each city's box is its own.

Where

Every hub has a Warehouseman; click him and the warehouse window opens.

Items

• A box holds 40 items. The window shows twenty at a time: once the first tab is full a small arrow appears on the right, and it scrolls you down to the second tab -- and back up.
• Each city keeps its own box. What you leave in Phoenix Castle is in Phoenix Castle; the Twin City box is a different one. Six boxes, 240 items in all.
• Deposit by dragging an item from your bag into the window, withdraw by dragging it back. Worn gear cannot be stored while it is worn.

Gold

The window's money field is one purse shared by every warehouse: gold you deposit in Twin City can be drawn in Bird Island. It never leaves the vault on its own.

Meteors and DragonBalls

For those two the Market's Banker keeps a separate vault that counts them instead of storing them as items, and hands them back packed ten to a scroll -- see the market guide.

Where to find them