Thai Street Food
There is the dessert place, Ban Khanom Thai, at 5721 Hollywood Blvd. They have the Khanom Krok if you get there early enough. (Those sound like the coconut waffle balls you mention, but they do sell out.) They have other street sweets as well. Do a search on the name for more info.
Who, and where, is the coconut waffle ball guy?