Not that I'm getting to go, but I've found a couple of GenCon Specials out there...
Giant in the Playground - Get a free Elan magnet with the purchase of
War and XPs from the APE Games booth. AND "while supplies last, purchase
On the Origin of PCs,
Dungeon Crawlin' Fools, and
No Cure for the Paladin Blues and you will get a copy of
Start of Darkness free!
The Ram - The Ram is a restaurant/brewery near the convention center and this year they will have 2 specialty beers..."Apocalypse Ale" (big, brown English style beer) and "Underdark Stout" (wicked, dark & oaty stout). Along with t-shirts and collectible glassware.
Fat Dragon Games - There is a coupon in the Gen Con coupon book (in the swag bags). Present the coupon and get a special free model with any purchase. (While supplies last I assume.) AND get "E-Z TERRAIN: Cliffs & Mountains" free with the purchase of any three model sets from FDG booth.
Privateer Press - In addition to all the Monsterpocalypse stuff that will be on showcase, "Gen Con Indy will be your first chance to get the new Kilt Lifter Trollkin model, exclusively from Privateer Press. Previously a specialty brew and collectible t-shirt at The RAM, this is your first chance to own the limited edition collector's sculpt. (This model is for collectors only, no rules exist for the Kilt Lifter Trollkin). Stop by booth 1201 to grab your Kilt Lifter Trollkin model for only $15, while supplies last."