Stick it in a bag of uncooked rice for at least 24 hours, make sure that the battery is removed so that there is no current.
Make sure the Ipod is well covered. The moisture will be drawn out. Used to do IT work and this was the solution offered, plus had to do it myself and it worked great!
As other have said, 1/2 a cup of rice, 1 egg, 1 x chopped onion, 2oz prawns, some chopped chillis, and cook for 15mins, and there you have it a nice "iPad Thai Chilli Prawn" yummy :-)
