Another item inspired by an artifact from the Charlie Wiseman Collection.  This version differs from the original by giving Inhuman Strength in addition to all of the original benefits.

*Thirst (aka The Blade That Drinks)
Description: A claidheamh mor in which the spirit of a redcap was bound after it had offended a powerful sidhe noble.

Skills Affected: Weapons, Athletics, Rapport, Empathy, Endurance, other physical skills, Discipline,
Effects:
[-0] Purpose. To imprison an impudent redcap and teach him to respect his betters, especially when his betters include powerful sidhe.
[-0] It Is What It Is.  A claidheamh mor, or basket-hilted broadsword (Weapon:3)
[-0] Unbreakable. As an Item of Power, this item cannot be broken except with a magical ritual predicated upon perverting its purpose..
[-1] Channeling The Warrior Spirit. The wielder can draw upon the martial skills and experience of the redcap spirit.  However, the ferocity of the redcap's mindset means that while doing so one's ability to persuade and relate to people suffers.  (Reskinned Skill Shuffle trapping of Beast Change; Weapons and Athletics change places with Rapport and Empathy respectively).
[-2] Communion of Might The wielder can draw upon the strength of the redcap's spirit to augment his own. (Inhuman Strength)
[-4] Communion of Vitality. The wielder can draw upon the lifeforce of the redcap's spirit to enhance his recuperative capabilities (Supernatural Recovery).
[+3] The Catch (Cold Iron). Since the Redcap was a creature of Faerie, one who draws upon its vitality to enhance his recuperation must share in his Faerie vulnerability to Cold Iron (Easily Accessed +2; Specific Research Material necessary to realize the sword imprisons a redcap's spirit +1)
[+1] The Sword Must Drink. Though imprisoned within a sword, the spirit of the redcap still needs to drink its fill of blood to maintain its strength.  If deprived for too long it may weaken to the point that it might not be able to provide its benefit of enhanced vitality to its wielder (Feeding Dependency: Blood attached to Inhuman Strength and Supernatural Recovery).
[-1] Share The Feast. When the sword is sated the Communion of Vitality between it and the wielder allows him to receive a portion of the benefit.  The downside is that while Channeling The Warrior Spirit the wielder may have to resist the compulsions to feed (draw blood with the sword) experienced by the redcap spirit (Blood Drinker)
[+2] Item of Power

Total Cost: 2 Refresh

If your player is looking for an Item of Power from his sponsor, here's something that might come in handy.

Phoenix Feather
Description: A feather from the legendary fiery bird that dies only to be reborn from its ashes, it burns eternally with the Flames of Life.  It both has the power to restore as its flame nurtures the inner spark of Life within its wielder and destory by generating blasts of flame that burn those he wishes to harm.


Skills Affected: Endurance, other physical skills, Discipline
Effects:
[-0] Unbreakable.  As an Item of Power, this item cannot be broken.
[-0] Eternal Flame. It shall burn always, unquenchable.
[-0] The Flame Harms Not. The flame does not burn or harm beings and objects it touches
[-0] Brightly Burning. The flame brings light to dark places (Light Source as per Pixie entry on page 48 of Our World).
[-4] Blaze of Life. The feather feeds one's inner spark of Life, turning it into a blaze which grants one Supernatural Recovery
[+2] The Catch (Necromantic Magic). As a Phoenix Feather is an artifact of Life, the enhancement it grants one's life force can not aid in recuperation from injuries inflicted the unnatural magic of its opposition, Death. (Limited Class Of People: +1; Specific Research Material: +1).
[-2] Wrathful Blast. By a focused act of will, the wielder can direct a blast of flame as one would from a wand that does potentially inflict damage (Reskinned Breath Weapon that uses Discipline for the skill to hit).
[+2] Item of Power

Total Cost: 2 Refresh

Another Catch I just thought of for a Were-rhino or other supernatural beast:  The horns, claws, hooves, etc of another one of my kind (or weapons fashioned from such things).  Might be worth at least a +1, unless your kind is very rare.

Not necessarily.  Just because they don't break doesn't mean they won't transmit the force of impact through them.

A version of Breath Weapon where they can shoot their appropriate element at targets might also be a feature, as might a reskinned Claws that allowed them to sheath their fists with their element to make their punches stronger.

Wind-riding (reskinned Wings) for Air, Aquatic for Water, and Physical Immunity: Fire for Fire might be good as well.  Don't have an idea on what to give Earth though.

Here are my votes:

Favorite PC:
Georgia Flanagan, by Falar

Favorite NPC:
Jake J, by Richard_Chilton

Best Quote:
Gen. Josef Wartberg (NPC), Enduring the Apocalypse

Best Plot:
Enduring the Apocalypse, by Sanctaphrax

Best Location or City:
Liverpool, by Team8Mum

Player of the Year:
Abstain

Best Sounding Board:
Wyvern

Best DFRPG Board Contributor:
Abstain

GM of the Year:
Sanctaphrax

Game of the Year:
Enduring the Apocalypse, by Sanctaphrax

At the very least, the Vatican's embassies might have potent thresholds.

"Healing" potions shouldn't really be possible, IMO.  Especially not clearing stress.  Reducing a consequence should be all the potion is capable of (or suppressing them for a scene).  You're looking at 8 shifts to go from moderate to mild.  The absolute most I would allow is clearing away a mild consequence, but that'd be 6 shifts.

Well, there's always the Altering Consequences option, which would technically be within the rules, since you're not accelerating how fast someone recovers from a consequence, just changing the nature of the consequence someone is recovering from.  If you used this option, you'd probably need a potion with at least a number of shifts equal to the level of consequence you are treating.