Thaumaturgy Limitations and Difficulty

[CableRouter]

It might be worth my while compiling a list of ritual objects and how much they affect the complexity of a ritual. Just for ease of reference.

That's simple, the set of possible ritual objects is exactly the same as the set of all objects and they all provide a +2 bonus when tagged. 

It's up to the GM if a given object applies to a given ritual, what skill it requires and what the Declaration difficulty will be.

As for what items you need to perform what rituals, also a non-starter.  While it's common to track a target with hair or blood, you could
probably also do it a soldier's dog tags, a priest's crucifix, ect.  Anything that is essentially part of who that person is can point back to
that person.  Compiling a list would be a pretty impossible task, mainly because rituals can do anything you can think of.  Come on, really,
would it even be possible to make such a list when we'd end up trying to determine what you need from the target to cause a frozen turkey
to fall from the sky and kill him, cause his hair to fall out, make him deaf for an hour, turn a house into a cinder, turn a city block into a
cinder?  Then we'd need the reverse on a lot of those, like turning a pile of cinders back into a house!  Far, far easier for each GM to
decide on the spot of the supplied components are adequate or not.

[Wordmaker]

Rather than compiling a comprehensive list, I meant that it'd be useful to classify certain "grades" of ritual item, like this:

Blood, recently-cut hair, using someone's True Name: +0 to Complexity
Personal item such as wedding ring or piece of clothing worn often: +1 to Complexity
Personal possession handled rarely, or something the target has only touched very recently such as a cigarette butt: +2 to Complexity

Only one item would normally be used in a given ritual.

It's probably getting too complex for what it's trying to do, but it's hard to nail down tracking spells and the like since there are no guidelines given for how easy or hard it is to track someone with mundane skills for comparison, unless you're just rolling against someone's Stealth skill.