Cactus & succulent festival 2013

I went to the succulent festival today to try and pick up some interesting pieces. I'm always amazed by how some of these alien shapes came about. I particularly loved the ones that overflowed their pots, almost like a fern - but with these gorgeous juicy leaves, but couldn't find any of them for sale. I want to get more plant life into the house, but I always manage to kill everything. Maybe these will survive?