I have ... it was the only way to get it around here. You'll be tempted to keep the pearls for longer than overnight but don't, all the bubble tea shops I know throw theirs out after a day. Tapioca pearls can be found at your local asian market, mine also carried the straws. Oh, by all means avoid the precooked canned or jarred tapioca (mush bleah!) but if you cut up coconut gelatin small enough to fit through the straw it's way yummy and you get Globes and cubes. The pearls I found came in a large block say 8 inches cubed, so you get a lot of them. It's best to cook em up for friends you plan to turn on that way you can do large batches.

Something I haven't tried but I've been thinking about it is using that orange julius mix in the grocery store to give it some extra zing.

Anyway, that's my story. Now that I have a local dealer I don't have to make it anymore, but it's good to know how to cook up a batch, you know just in case you're jonesing and they're not open, or they closed down or sold the business, and you live three hours away from the bubble tea!

I worked at Lucy's Tea House like 7 years ago, but here goes.
3 tablespoons sugar, 2 tble. non dairy creamer for the non dairy's or 2 of powdered milk, and one cup strong hot black tea. Put in one of those metal shakers for booze. Add ice to almost the top. Put the cover on! Shake! Shake! Shake! That's pretty much it.
Don't know about the tapioca though.