I'm just interested as to what weapons everyone can come up with.
([URL=http://en.wikipedia.org/wiki/Zanpakuto]reference[/URL] for those who don't know what I'm talking about)

Name: Kage no Hyakukatachi (Hundred Forms of Shadow)
Release word: Tenkan, ... (Shift)
Shikai: Transforms into a mass of shadow over torso and arms like armor. Can instantly change shape at will into shields, swords, spears, etc., as long as there is sufficient shadow for the willed object.
Bankai: Kage no Senkatachi (Thousand Forms of Shadow)
A 30-meter disc of shadow spreads from the feet. Anything inside the disc is attacked from all angles, and the disc itself can be shrunk to will greater sized weapons, shields, and armor.