Okay, here's some of what I have on hand. Underlined is what I have already solved, Italics are the ones I'm still looking at using the mechanics of Sponsored Magic for. Again, this is for an anime convention I'm attending, so. . .
I am also up for how you emulated magic in another series, especially if it relies on the Sponsored Magic approach.
Witch Hunter Robin: Easy to emulate with simple Channeling and Psychic Powers.
Slayers: Easy enough with Evocation, Thaumaturgy and Items of Power. Sponsored Magic works as normal, so no real need for a hackup.
Anything with a form of "Blade Magic": Throw it in as Channeling/Evocation with either a special Limitation of weapons only, an invoking of an Aspect to keep it Weapons Only, or by making the weapon an Item of Power. Add in a stunt to use Weapons instead of Discipline. Additionally, can use some of the Sponsored Magic related to this topic depending on the source.
Darker Than Black: This one got some discussion. I was going to leave it as Channeling with an Aspect that gets invoked afterward (i.e. the Remuneration), but one of my soundboard monkeys suggested that it would work better with Sponsored. Thoughts?
Fullmetal Alchemist: I was originally looking at Sponsored Magic here, but started to lean more toward creative applications of Channeling/Thaumaturgy with a requirement of an Alchemist Circle (make it either an invoke of the High Concept or as a "limitation" to the power). Only problem with that is the time involved, as we see characters doing relatively large and complicated effects rather quickly, but the biggest ones taking more time (perhaps as Aspects to make the spell easier?).
Fate/Stay Night and Fate/Zero: For the most part, most of the magic of the magi in this series would work well with the standard fare of Evocation/Thaumaturgy, with a few exceptions of Sponsored Magic here and there. Summoning the Servants appears to be an odd combination of standard Thaumaturgy (as it has to be a ritual the first time) and Sponsored Magic (command spells to summon). Some of the magic (like Tracing, as mentioned in the other threads) just seems to work only for Sponsored Magic. The other oddities can be lumped either as Items of Power, Enchanted Items, or as specific powers (some of which need work, like the Reality Marbles). Servants, as a whole, seem to be a whole different beast that I don't think has a Fate/DFRPG parallel.
Generic Shounen Anime: This includes series like Dragon Ball Z, Naruto, etc. I think it can be emulated well enough as-is without having to finaggle Sponsored Magic to emulate anything. Anyone think otherwise, or can name a series that would benefit from a "Self-Sponsor" approach?
Maoyuu: A friend of mine mentioned this, and I haven't had the chance to watch it (may not have enough time prior to my deadline). The main character can, for example, create and heal spirits, and teleport to anywhere he's been. The former could be Ritual: Summoning (but doesn't cover the healing), but if he's doing it quickly (which it sounds like), that can only be done via Sponsored Magic, and I don't think the setting has a specific sponsor, ergo using the trappings of Sponsored Magic sans the debt. The teleporting thing just sounds like a combination of a power and/or an invocation of a specific aspect.
So that's what I have on hand at the moment. Anyone have any opinions on these?