food or shopping voucher?

I'm not sure whether to exchange my Citibank credit card points with food voucher, shopping voucher or a digital weighing scale.

Food voucher : Coffee Bean (my fave), Haagen Danz, Dome, Genki Sushi, TGIF
Shopping voucher : Watson's, Guardian

I wanted to get a shaver for him, but he didn't want that model. Have one weighing machine at home, but i'd like to have a digital one. At the same time, i couldn't resist food. Aiya...how?