May I suggest a small, yet disproportionately pleasant buff to the completion of the Anthill Dungeon:
While raiding an anthill, whenever you critical miss, instead of finding nothing, always find one random common ant grub. (Soldiers, Pupae, Larvae, Aphids).
"Always find something while raiding anthills."
Each successive ant queen slain contributes +1 to the quality of all foraged ants.