One of the other 12 string threads we got to talking about that Mooh. Also, in the "Monty Python, And Now for Something Completely Different Department," try a Hi-string "Nashville Tuning" on your 12. But an extra-lite set and throw out the 11 and 12. Shift everything up 1 and use 006's for the high E. Tune a step above pitch and then play around with the capo....interesting effects. If I had an old beater, I'd leave it tuned that way for fun.