After this event, very few of use are going to be Noble Gardeners. We're all going to be Noble Campers. I'm glad I got all the achievements for this, I can't take anymore rabbits sitting in bushes anymore xD. And yes, I camped the whole time >.>
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I'd contact a GM then. I don't see any other way of getting the basket besides the one-time quest.
For Hard Boiled, bring some Noblegarden Eggs to Golaka Springs. Once you place the Brightly Colored Egg loot it. There is a chance you will turn into a bunny. The wait the few seconds it takes to get the achievement. Only down side is that you have to wait an hours between placings, but if this is your last achievement to get the title you can log off and work on another toon in the meantime. Good luck!
Regarding the Hard-boiled achievement, if U get a group together and at least two peeps have the blossoming branch item, U can all get the achievement without having to worry about getting to Un'Goro while polymorphed. A group of friends and I did so with no troubles and it took us total of approx 15 min to get everyone's eggs laid. From there U can go on to do the Desert Flower achievement as well, being ur rght near Tanaris, 1K needles, & Desolace.
Didn't read the rest of the comments, so not sure if this was said, however, for the Hard Boiled! Achievement, there is a much simpler way.Buy the Noblegarden Egg for 5 chocolates, and use that. At least, it's how I got mine.