This is such a great thread. I've been keeping a bunch of morphs in a plastic container for ages now and they've attached to the plastic. Reading this thread motivated me to put them on some rock and get rid of the container. I got my bank card and slid it gently under the foot of the morphs to detach them from the plastic without damaging them and put them on small pieces of live rock covered with bridal veil and a rubber band. Within a day they had all turned themselves upside down so I unwrapped them and tried again with the same method but made the bridal veil tighter. They stayed in place but were trying to expand thru the bridal veil. I was worried about losing them so I undid it (after a day) and they had already attached.
Just thought I would post my experiences and bring this thread to the top of the pile at the same time - I also think it should be a sticky!