Wildlife Spotting

Nice little collection. The one in the front is Haworthia attenuate and the one behind it on the left looks like a Rhipsalis species. The one in the back I'm not sure, perhaps Crassula as Hayley has suggested.

The round one looks like pictures of Echinopsis dominos: http://cactiguide.com/forum/viewtopic.php?f=2&t=30596. The others might be species of Crassula? Not sure.

You've got like four succulents there. One of them is aloe... I don't know about the rest. Good luck! http://homeguides.sfgate.com/white-spots-aloe-33768.html