Quote Originally Posted by Chronos View Post
Here's what I've got so far:
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A 50' coil of rope
A 5' long stick
A chain composed of many links
A key the wizard has at hand
A key the wizard is closely familiar with
A key the wizard has handled once
A key the wizard has seen hanging on a guard's belt
A copy of a book the wizard has read
A copy of a book the wizard has seen, closed
A copy of a wizard's spellbook
A container of a nonmagical liquid
A container of a nonmagical powder or dust
A jar with a lid that can be opened but remains attached
A jar with a removable lid
A piece of ice, in an environment that's warmer than freezing
A hatchet or short sword, that could then be wielded as a magic weapon
An arrow
A shortbow
A living plant
A dead plant
A dead creature
A common spellcasting material component
A spellcasting focus
A valuable spellcasting component
A consumed spellcasting component
A valuable, consumed spellcasting component
A specific sign or painting that the wizard has seen before
A sign or painting bearing some message or image the wizard has never seen in sign or painting form
An object that the wizard has never actually seen, but has seen an illusion of
An object that the wizard has never seen directly, but has seen through scrying or the like
Looking at this list, the only really interesting one is creating a valuable consumed spell casting component.
The description of the class feature does not mention any limits of cost. A diamond worth 25,000 gp for a True Resurrection spell? In principle it is smaller than 3' and within the weight limit, so why not? The same for glyph of warding, greater restoration, symbol, clone, and others. A corollary problem is that some of these spells have a casting time of one hour, so in principle you the component may disappear 6 seconds before the casting is finished, but I would not be so strict about that.