Here is a spray from one of my Fringe Wattles (Acacia fimbriata). Each wattle-ball is about 4mm across when fully open. The little closed fists of the unopened flowers add to the charm, I think. It has a sweet pollen-scent which comes in gentle breaths right to my back door, and has been for a week or so. Now imagine the tree -- a couple of metres high and 4m wide -- and you will understand the effect of such a sight in wintertime.
I have three species of wattle in my garden: Fringe Wattle, Sydney Golden Wattle, and Parramatta Wattle. Two plants of each. Yes, you'll see photos of the others shortly!