Kalanchoe orygalis
It seems so easy to grow this plant - because it is undemanding and thrives on little attention. I find its colour particularly attractive, and unlike other Kalanchoes, it does not make itself into a pest but just steadily grows as a single plant without spreading itself all around where it may not be wanted. I haven't checked, but I suspect that it has grown through its pot and is now embedded in the ground. I have this one and a small one, and I think I will try to propagate a couple more for good measure.
Kalanchoe orygalis