I plan on doing a variation sometime soon using blackberries. Basically, I F-ing love blackberries. Unfortunately, they can be expensive, and blackberry juice isn't exactly easy to come along.
My brother and his girlfriend are big pomegranate fans, and they are moving together in a month or two, so I might also try a variation with pomegranate to give some to them as a gift (and lets face it, to experiment for myself).
Unfortunately though, I have nothing to report now (and I wont for a month+)