What one item do you wish you had in your kitchen?

[Belmit]

Was thinking about this the other day but decided to wait until the new forum was open to post it.

I'd really like a good pestle and mortar. Not a piddly little one but a really good quality **** off granite one. They're not too expensive but too much to justify at the moment, especially considering how often I'd use it. Saw Ramsay making a marinade for the fish dish they were cooking on The F Word the other day and grinding all kinds of great stuff up. Looks like a really satisfying hands-on way of getting the flavour out of things.

If there were no practical limits, what would you add to your culinary equipment arsenal?