Vouchers for Gifts

We've been scratching our heads trying to come up with gift ideas for DH's nieces this Christmas. Children today are so lucky! They have simply everything, even things they do not ask for, which makes gift buying so difficult! I suggested buying some gift vouchers such as Borders gift vouchers or aj madison coupons instead of physical presents so the nieces could go buy their own gifts. However, DH is of the opinion that physical presents are a lot more fun compared to vouchers! What do you think?