When I was at uni one of the lectures was doing research and had like 100 of them. He kept them all in jars the size of a big nutella jar with about 5cm dirt and a cotton wall ball that was moistened. It was pretty cool feeding them all, we kept them all together in a couple of big drawers so dark all the time. The girls lived for years but the boys lasted one season when mature, some of the girls even had babies - that was pretty tricky cause they were so tiny, most of them ate each other.
Good luck with finding them, the uni had a couple of people that used to find them - they got them from the blue mountains area and dug up areas of soil under logs and stuff. Oh and they get angry when you blow on them, thats how we used to get venom from them.