IMHO, the very best deal is the $100/$125 discount on the purchase of APs/PAPs. And those who purchase an AP/PAP, can get the DDE card for only $50. (Disney Dining Experience program gives you 20% off food & beverage, including alcohol at most WDW restaurants).
A list of the current DVC perks is on the Members' website. Until you can access that, you may find this link helpful:
P.S. If you were asking about using your points for something other than DVC resorts, MHO is that there aren't any good deals - or at least very, very few, LOL!
Bear in mind, though, that DVC perks and benefits can and do change. Just because something is available today does not necessarily mean it will be available tomorrow.
I consider the perks and bennies like toppings on an ice cream sundae -- they're tasty, and they are all different, but they're not the main event!