Hi guys! So I'm going to be making my daughters birthday cake next month. I have seen many photos and YouTube videos of Frozen themed cake with the candy rock sticks on top behind Elsa. All of them however have used a Styrofoam top layer. I really want to avoid having to do that. I want to be able to stick it in the actual cake. I'll be using fondant and I'm scared the weight of the rock candy will stretch the fondant and fall or droop over. Any suggestions? Has anyone used it for a similar cake? 

I've never used it, but I've seen it being used on fondant. Maybe if the you put the thicker layer of rock candy on the bottom it will be OK?

http://thecakeblog.com/2011/05/rock-candy-cakes.html

How about inserting straws to hold the rock candy sticks? 

I have used them in a double layer cake covered in buttercream and it didnt fall over but I definitely wouldn't transport it with them stuck in. Just make sure you get one with long sticks that way it will counter the weight of the candy. 

I used them on a buttercream cake. Made sure the stick portion was cut to the height of cake (like you'd do a dowel) which allowed the rock candy to adhere to the buttercream.