There's an article in the most recent BYO on using nuts in beer...you may want to check that out.
I like the idea of the ginger as well...I was researching Pumpking clones recently, and the general consensus seemed to be that candied ginger was an important component in the spice blend of that beer...
Packaged: Dark Munich Citra SMaSH, Mayan Stout, Caramel Quad, Basic Spiced Cider, Spur of the Moment Graff
Recent Meads: Mead Day '11 Ginger Metheglin, Mead Day '12 Traditional (orange blossom) Mead, Fresh Simple Cyser '12, Cherry Melomel, Belgeglin, Bochet
Secondary: Why do I keep this line here...?
Bulk Aging: Cocobochet
Planned: Hop Metheglin #3 (NZ hops), Trad. Gesho T'ej