Australian Spiders Like Dark Places
They do. A camera bag is a dark place. This one made me drop the lens it was sitting on. No, I didn't get bit. Of course, I was shaking, so most of the pictures I took straight after were blurred. This, one though, seems to indicate it might have been some kind of wolf spider. Unfortunately, these were the best I could do. We did get a vague measurement - my son held the ruler - so this one wasn't terribly big. But it was annoyed at being herded by a ruler and photographed.