I stumbled across the wikipedia entry for Vecna and this section, after going trough a long list of body parts which seams to be all artifacts on their own, says
These artifacts are collectively known in D&D 3rd Edition as the Fragments of Vecna.
And then continue with some other artifacts :
Compendium Maleficarum (said to be part of the Fragments)
Fragments of Vecna
Tome of Shared Secrets
Rod of the Whispered One
Sword of Kas
Left Ear of Vecna
Aside from the more famous left hand, the (left?) eye (which I know are both on the DMG) and the left ear (Dragon Magazine #359) none have a source.
Where are described (just cited or with whole effect description)?
Are all found in 3.x edition or some are from the older edition?