I like bubble tea and think it's worth the trouble to try it. @Sid Post, I've never seen it in canned form. You would definitely need the mochi balls. I'll look around and see what I can find that's available for order.
My favorite flavors of bubble tea would be Thai iced tea, matcha (green) tea, and honeydew melon. Coffee would probably also be good.
ETA: Actually, I think the balls are tapioca. Just searched Amazon and did see bubble tea in cans.