This could be a plot for a sitcom. Three different plants were made to share one pot and the hardships of their life together has made them into the best of friends. :)
The plants in this case are Gibbaeum geminum, Neohenricia sibbettii and Adromischus marianae v. herrei 'green form'. I potted them together last September because I didn't have the room (planting every small plant into its own container is a luxury on the windowsill) and I did so without knowing they would be compatible. I think they like growing together very much.