Graystone mentioned it, but here it is with description, the single most versatile item ever:
Traveler's Any-Tool
Aura moderate transmutation; CL 9th; Weight 2 lbs.
Slot none; Price 250 gp
DESCRIPTION
This implement at first seems to be nothing but a 12-inch iron bar lined with small plates and spikes. It can be folded, twisted, hinged, and bent, to form almost any known tool. Hammers, shovels, even a block and tackle (without rope) are possible. It can duplicate any tool the wielder can clearly visualize that contains only limited moving parts, such as a pair of scissors, but not a handloom. It cannot be used to replace missing or broken parts of machines or vehicles unless a mundane tool would have done the job just as well.
The any-tool counts as a set of masterwork artisan’s tools for most Craft or Profession skills (although very specialist crafts such as alchemy still require their own unique toolset). It is an ineffective weapon, always counting as an improvised weapon and never granting any masterwork bonus on attack rolls.
CONSTRUCTION REQUIREMENTS
Craft Wondrous Item, major creation; Cost 125 gp
Why carry a shovel, saw, grappling hook, crowbar or any tools for your craft skills when you can have just this? It doesn't matter what your GM throws at you, you'll practically always be prepared. One per party is enough.