Josh Colquitt [facebook page] contacted me on Facebook to share some clear ice work he's been doing. He has been filling a punch cooler (aka "beverage dispenser") with water and freezing with the top off inside a big top-loading freezer.
The cooler freezes from top to bottom via directional freezing, leaving him with a big round cylinder of ice to use. He then carves stuff out of it using power tools.
He gave me permission to share pictures of his work, including a huge punch/fruit bowl and other objects. I'd never seen anyone use that container before, great stuff.