I need a desert that has no sugar and no wheat?

I'm going over to a friend's house and I would like to bring a desert. The problem is that he has diabetes and his wife has that no-gluten disease whose name escapes me at the moment (the one Elizabeth Hasselbeck is always talking about, but I never listen to her and so I cannot remember the name exactly...something like Celiac disease, I think, but I don't know for sure).

Any ideas on what I might be able to bring? Sugar-free stuff is all right, but I can't bring things like a sugar-free pie, for example, because it has wheat in it.

Any ideas would be much appreciated.