I have been lucky enough that my bg can stand me eating two rugsprø - very thin rye crispbreads with 6 gr carbs each - for lunch. I put a slice of butter (using a Skandinavian cheese slicer to get even slices) and either lunch meat or cheese slices on them. I vary the butter with a heap of Italian salad (a mayonnaise salad with julienned carrots and cabbage) and cheese slices. Yum!
On those days my fbg is high (over 5.5, that is) I have another crispbread type that's only 1.1gr carbs, but as they are fully 10 times more expensive than the rye crispbreads....