Here is a quick list of druid usable DK items that have been found so far. I believe there are 4 more items yet to be found, so I will add to this as needed. It's also possible that some of these will be updated with the next patch. Let me know if you find any additions or corrections.

The Tolling of Dissonant Bells
Extended Tessitura Choker (http://lucy.allakhazam.com/item.html?id=39340) - 65% fire focus
Ghostrider's Bridle (http://lucy.allakhazam.com/item.html?id=39342) - Emp/Seru speed horse (looks like a normal tan horse)
Mask of the Mad Musician (http://lucy.allakhazam.com/item.html?id=39338) - 40% bene. duration (as of 6/28 patch)

Vertigo
Cracked Belfry Wristcuff (http://lucy.allakhazam.com/item.html?id=39346)
Drape of the Unseen (http://lucy.allakhazam.com/item.html?id=39352) - Clicky invis (5 sec cast) / 40% detri. duration (as of 6/28 patch)
Mayong's Buckled Girdle (http://lucy.allakhazam.com/item.html?id=39350) - 40% detri. range (as of 6/28 patch)
Wispy Deathknell Drape (http://lucy.allakhazam.com/item.html?id=39348) - 65% healing focus

Unwelcome Guests
Ashtar's Silken Sash (http://lucy.allakhazam.com/item.html?id=39360)
Forbidden Chord (http://lucy.allakhazam.com/item.html?id=39351)
Symbol of Double Forte (http://lucy.allakhazam.com/item.html?id=39364) - Circle of life 2 clicky
Three Octave Shawl (http://lucy.allakhazam.com/item.html?id=39362)
T`Pal's Leather Armguards (http://lucy.allakhazam.com/item.html?id=39357) - 20% bene. mana pres.

Ayonae Ro (The Mad Choir)
Bell Chime of Dissonance (http://lucy.allakhazam.com/item.html?id=39370)
Diva's Mask of Eternal Beauty (http://lucy.allakhazam.com/item.html?id=39368) - 65% healing focus
Glass Orb of Consonance (http://lucy.allakhazam.com/item.html?id=39369)
Harpstring Hair Choker (http://lucy.allakhazam.com/item.html?id=39366) - 40% bene. extended range
Last Treble Buckler (http://lucy.allakhazam.com/item.html?id=39372) - 65% cold focus
Undertaker's Spade (http://lucy.allakhazam.com/item.html?id=39371) - 65% magic focus
Symbol of Pianissimo (http://lucy.allakhazam.com/item.html?id=39375) - Circle of life 3 clicky

Interesting that the bridle can go in range or ammo. But if I recall, the ammo slot does not provide any stats.

SOE doesn't understand the first thing about diminishing returns. 60 to 65 after a 50 to 60 jump? Ridiculous.

awesome list, thanks

Made the following updates per the 6/28/06 patch notes:

- Mask of the Mad Musician now has the focus effect of Blessing of the Elddar.
- Drape of the Unseen now has the focus effect of Curse of Takish.
- Mayong’s Buckled Girdle now has the focus effect Zomm’s Right Eye.