ice

speed up the dissolve of ice
http://www.sciencebuddies.org/science-fair-projects/project_ideas/Chem_p049.shtml
spreading a mixture of sand and salt on the streets after a snowfall to help de-ice the road.

use several ice cubes

http://www.chacha.com/question/what-dissolves-faster-powdered-sugar-or-sugar-cubes
Stirring, shaking and heating up the temperature of the solvent will cause a solute to dissolve f...