Keen to use my lettuce, my eye wandered around the freezer and rested on the ice blocks that go into lunch boxes...
Here's what I did...
I'm never keen to use ice for anything other than drinks (and ant bites) as I only have one ice cube tray that holds maybe twelve cubes at a time - so this was a great way of getting ice cold water with out sacrificing a tray of cubes to the cause!
After the lettuce was done, it was the work of a few seconds to wipe the block and pop 'em back in the freezer which is funny as it would only take a few seconds longer to refill the ice tray with water and put it back in the freezer, but it NEVER happens!
Green-ness: 5/5 for using the lettuce and not wasting any more water than nessersary
Frugal-ness: 5/5 for not having to buy another lettuce and throwing out one you have already paid for.
Time cost: Possibly slightly less than if I had used real ice cubes!
Skill level: There isn't one!
Fun-ness: really good to have crispy lettuce in my salad!