sorbet in a bag
sorbet in a "sack": in a gallon ziplock, put a tray of ice cubes and 6 tbsp rock salt. in a quart ziplock, put 1 pint fruit juice. seal the air out of the quart ziplock, put it with the ice and salt in the gallon ziplock, seal, warp in a towel, and agitate for 5 mins. via boingboing.