Offering gifts to some women on Christmas

There is a common practice here in the west, that at christmas time some non-muslims, young and old, get together and gather all of their names, put them in a hat and have all of the names mixed up, then each person choses the name of another person who they will give a gift to on christmas day. This is called chris kringle. This basic idea was taken on by a group of sisters last year and now they want to take this practise on this year also for the end of eid. All that the practice consists of, is each sister randomly assigned another sister for whom she must buy a gift of a set value ($20 ). Some of the sisters invloved believe that this practsie is tashabu of the kufar, is this correct?