How much flour needs to be measured out for the grain-offering? A minimal amount, so that even the poorest sinner can manage the offering. And that flour? It's dough, not just loose, powdery flour. Also, fresh figs vs. dried figs in terms of figuring out the volume or number when it comes to giving terumah (and the question of whether that's terumah gedolah or terumat ma'aser).