Tonight my players will finally face the summoning of Tiamat. Whether they actually face the 5-headed dragon herself is yet to be known!
The platforms are carved from polystyrene and painted. I plan to sell them on this site when the campaign is over. They're not perfect, but a really good start and maybe someone else will find them useful! I will be making more terrain for the site as well in addition to that. Let me know in the comments/twitter/facebook/etc. what sorts of items like this you might find useful!