Balance beverages look and taste like water, but contain small doses of floral essences from Australia, which are purported to sharpen thinking and ward off jet lag. Offer "Travel" as a welcome gift, and set out "Mind" at breaks. A number of hotels already offer the drink; otherwise, it's available by the case on Amazon.com (a 24-pack costs about $40). For orders of five cases or more, buy direct from the company at a discount. drinkbalance.com