Franklin SPQ-108

Great little compact pocket speller and calculator. Just type in your poorly spelt word and press enter, it then gives you a list of words you are trying to spell, the first is usually the right one, but if not just scroll down until you see it. There is also a data-bank to store phone numbers and a selection of simple games, like hangman. The tough plastic lid clicks down over the keys so there's no need for a case.
In summary, small, neat and does the job.