Alter Wand
An ornate brass wand is one example of an alter wand out there in the wild. This one, owned by Xred, was provided as an example to reference here in this encyclopedic volume of knowledge.
It is powered by a gem each time you use it and will add to the long design of an item via several "connecting/embellishing" methods, depending on what is being used. The value of the gem has no bearing on the outcome.
Sometimes scripted items will work with it. Sometimes not. An unscripted item is very likely to work.
Analyze:
You analyze the brass wand and sense that the item is largely free from merchant alteration restrictions.
The creator has also provided the following information:
You carefully analyze your brass wand and sense that there are no alteration restrictions other than common sense. And it must be some kind of wand/rod or other item that makes sense to be waved. SHOWs are allowed.
To use the wand, hold the item to be changed in hand and WAVE the brass wand at the item to be used as the source of the design. The item in hand will be altered using this format:
"[an item] embellished with [a source item] design"
"Embellished" can change to other terms, depending on the material of the item being altered.
The source item can be anything (with some restrictions) that can be targeted with the brass wand except players.
You also sense that the brass wand, though magical, does not uses charges. Instead it requires a gem for power each time it is used.
Try as you might, you cannot get a good sense of whether or not the wand's pockets could get any deeper, but you can tell that the wand is as light as it can get.