"...D. Weaire and his colleague R. Phelan undertook to construct two-layer foams with equal-sized bubbles, and they found that the dry foams did take on Tóth's pattern. But when they gradually added liquid to thicken the bubble walls, something 'quite dramatic' happened: the structure suddenly switched over to the three-rhombus configuration of a honeycomb (it seems, then, that the bees got it right after all!).[...])." (pasted from Archimedes' lab page)
...so one day the bees were just sitting around pondering their storage quandaries when one of the girls, in apopleptic boredom, began blowing bubbles in her honey and milk; when 'eureka!' she saw the bubbles arrange themselves into hexagons (rhombic decahedrons)and said to the other girls. "hey! I just had an idea, let's put the honey in ziplock baggies."