How about Item familiar?
I mean, as long as you're a Wizard...
This could get crazy with items that have charges... it can even be done in e6
EDIT: wait, at 7th level,
"It gains Intelligence, Wisdom, and Charisma scores."; so does that mean the items are 'creatures'? Now you can have two Items, or two Dragons or two Special Mount-Familiars or whatever at any given time?