This probably isn't the greatest thing to publicize to coworkers but there are very covert Flask Ties that let people subtly sneak in some sweet booze.
The sneaky Flask Ties come with a hidden pocket that's actually a reusable pouch for liquids. All users have to do is fill it up with their favorite cocktail concoction and tuck it neatly back in the neck tie. For non-alcoholics, this can also be a great carrier for juices and water, though why these things cannot be drank in the open is a mystery. The Flask Ties don't even have to be for work. They're great for formal or potentially dreadful social events. The only downside to this life-saving item is the extra weight around the neck.