This is just one of those mind boggling things. Who knew anyone could construct things this complex out of balloons, just balloons? Of course most of the constructions illustrated at that link are animals, but if you scroll down far enough you find some balloon flowers including a waterlily and a lily of the valley. So much for those rank amateurs you see at fairs. HT to Starts with a Bang blog. Attempting this could end in a bang too.