Many of the local mesemb or vygie species are well adapted to the widely variable South African gardening conditions. They pose few problems, even to beginner gardeners. Vygies are also grown successfully in containers with limited upkeep. 

Get a few cuttings of the 'easy species' from a friend's garden. Don't remove them from nature. Apart from this being illegal, some species don't transplant easily. And destruction of indigenous plant diversity is a sin! 

Remember the words of General Smuts with regard to the proper behaviour upon finding a pretty flower in the veld: 'Worship and move on!'