I've been thinking about this, too, and playing around with grinding them up to a very fine, smooth, paste (they're pretty soft) and adding them cake/brownie batter. I haven't made any in a while - but it's on my list for something to do the next time I make a batch.
mildly alcoholic cacao smoothie? could be nice for the beach (its summer here). muddle the nibs with mint for a mint chip martini? add them to any kahlua or baileys based drink?
these are all wild guesses obviously.
whats your process for the cacao/vodka, just soak them in there? how long? what temp? i love vodka and have lots of cacao, i might start my vodka as soon as tomorrow.
Brian - I think this is a really excellent idea and a way to incorporate the cocoa-infused vodka in the same beverage! Not a Black Russian ... what might a good name be?