Originally Posted by Joba2
That is what I did too.Figured out what designers I was short of & checked their stores.Helped too!!
Sort the list of your zip files alphabetically and then look at which you don't have two of. The first two or three letters will give you a hint as to which designer the prize is associated with. So yes, that would be a way of finding what you're missing, besides just going back through the list and checking off the ones you're sure you got.
If this helps, as an extra hint, I didn't hide any prizes in anything that wasn't a kit. So if, for example, the designer has a kit, a brag book set, the elements alone and the papers alone, the clue would be in the kit.