James--Hey, thanks for this question. Here's the answer I sent out to backers in Asia and Australia last night:
Stickers: There is a sheet of stickers in the box with all of the different icons in the game and different numerical increments. This was a stretch goal that is not actually needed for the game, but after you’ve played the game a number of times, you might want to customize your copy by changing some of the numbers on the cards, board, or player mats. Perhaps you might have a Risk: Legacy-style house rule that allows the winner to change one icon on one of the player mats. The player mats are double sided, so you can always keep one side the same, and the back side could be different (like the different player mats in 7 Wonders).
Art Print: I had my artist create a piece of art that contains every Viticulture Kickstarter backer on it as a way of thanking you all for making this dream a reality.
ooooh! Very cool! (Both the stickers and art print.)