A quick guide showing you where to find the bucket for the Master Water Collector achievement.
Where is That Bukkit?!
When you first start the game there is a small prologue section. There's a bukkit here:
You can carry this to your boat, but this isn't your bukkit! (I don't know if this affects your bukkit appearing in your cave grotto when you start properly - but it's a free bukkit!)
When you've finished the prologue and you start the game in your sexy cave grotto you can find it here. This is towards the back right of the cave (behind you and to the left when you start).
When you step out from the water and admire your domain, the bukkit is here:
Carry that bukkit all the way to the end and you'll have yourself a shiny new achievement (and your old shiny bukkit)!