My friend Dave will know what this is, I thought. He's the local expert on insects. So I emailed the photo to him, and asked him what insect he thought could have laid these tiny eggs. I'd found them attached to a plant stalk, close to the ground, in the Brisbane Ranges several days ago.
Not eggs, he said. Eggs would be even in size and laid in a pattern. Maybe it's a fungus, he said. So I hit the reference books. Slime moulds develop sporangia after the slime stage, and this is the shape of one of the forms. [Check out Fuhrer's A field guide to Australian fungi, p351 - it's very similar to my photo. It's label is Leocarpus fragilis.]