I already get in plenty of yoga, but I wish I could spend more time on my personal practice. Also wish I could spend more time on my personal rehearsal time.
OK, so I probably could...I wish I would Just Do It

!
Cardio: There's a new aerobic play class at my health club -- I'm thinking jump rope, hopscotch, hula hoops...that sounds like fun to me. But then I'm probably picturing more anarchy than the instructor has in mind!
I wish I had a place to REALLY
ride a bike, and the weather for it year round.
Ballet -- either a class, or at least the NYC ballet workout vids, I LOVE those.
More
weights! I like the machines rather than free weights. I've laid off them while I recover from an injury and I miss them!