I am diabetic, but quite well controlled. A treat thing I find is to have some savoury biscuits, some with poppy seeds or sesame seeds or crackers and put some smoked salmon on just before they come in and I either add a little lemon slice to put the juice over or a dash of mayonaisse
It sort of satisfies on various level. Quick to do, small individually, but fresh and easy to servc, you can offer some strips of celery with it too. Nothing much to do to make it or clear up afterwards