Hey there, nice to see you on overgrow. I actually stumbled upon your Braapzia inspired me back when you originally posted it. I have grown a handful of bonsai since then. I currently have 3 in the works. Been growing them a long time but their final form has not come to me yet. You can see my first try in my "Ancestral Skunk Bonsai that got out of control” thread.
I have a root over rock experiment and a couple others I will take photos of soon.