Needles of Fleshgraving, Definition of Object

[Marten Fawkes]

http://www.d20pfsrd.com/magic-items/wondrous-items/wondrous-items/m-p/needl es-of-fleshgraving
So, i kind of fell in love with this item recently since it has plenty of flavor. And i started wondering, what exactly constitutes as an object in regards to it.
For example, would a purse of coins work, or for that matter a chest or other container containing things? What if it contains a live being?
And just how big can the Object be, am i able to inscribe a carriage? A colossal weapon? Or does the object need to be strictly handheld? Do i even need to touch it?
Can i inscribe objects that are undergoing a process? A pyre, a burning barrel of tar?
Can the needles inscribe themselves onto someone?

So, i am curious what you guys think.

[Eragar]

Says you can do it on any object. But keep in mind that an entire house is more than one object, so is a pyre (lots of smaller wood objects).
As per containers, it would work on the container, but not the stuff inside the container.
Regarding things that are burning, I would say yes and no--the fire isn't part of the object, so you could engrave a torch, but when you get it back you would have to relight it. Likewise it probably wouldn't work on liquids, at least not any significant volume.

[DeltaOneG]

Doesn't really say so check with your GM.

I'd say everything op asked would be fine excepting the live being who would be expelled from the container.

My understanding of "object" is that the definition is pretty loose. Could target the whole thing (entire house) or just defined component (a brick).

[Marten Fawkes]

Loose is somewhat of an understatement. Shrink item, on which the Needles are based, explicably allows things like burning fires, which theoretically consist of smaller items and i have seen at least one occasion in an adventure path where Shrink item is used to shrink and steal a container including contents.

On the other hand, the Needles have none of the size and weight restrictions of the spell.