How to Get Rid of 35 Dollar Gift Cards

As a result of his wife's employer's strange bonus slash give away strategy, i'm in possession of 35 dollar gift cards to a grocery store chain. If i spend them all at once, i'll surely earn the scorn of the cashier and impatient custoers waiting behind me in the check out line. Any advice on how to use these gift cards in a respectful yet efficient manner? And that's from god, to get rid of these gift cards.