Not sure if this'll help but there's quite a few vegan protein shakes I've seen on the market. Just add water and shake. Supplement World has quite a few you could get at a relatively okay price.
As for taste, I wouldn't really know because I don't use them. The proteins are derived from things like peas (which has a strong "earthy" taste), hemp seeds, and rice. I'm guessing the flavoured shakes would be good though.