"Got this here from a wizard on a bargin. Just the thing to survive the salvaging of treasure from the deep when you don't have a lot of start up cash. Not everyone can tame sea turtles mate, you know what I'm saying? This here is an item with it's own character, a real unique item, so beware of imitators! The surest way to spot a fake is have a friend try it, if he dies, all you have is a ordinary bucket and a funeral to pay for, this here is the one real deal you've been looking for and it's still available for a steal!"
- Street hawker outside the Affordable Arch-Mage
A simple metal bucket, capable of holding a bucket of water, or as it happens, a lifetime of effort.
Pirates' many bejeweled rings and piercings actually had a practical purpose - when the pirate or sailor died, the rings could be taken off as payment for a proper burial, saving him from a watery grave. This could be tied into regional culture, or made into a quest (The Pirate's Lost Rings, etc.). Also gives treasure-seeking divers another thing to look for besides crusty old chests.