Indeed, no bride will be able to keep a cool and collected head without the unflinching support of her bridesmaids. The tradition of giving a special present to each bridesmaid dates from quite a long time and it’s an excellent way of showing these ladies how grateful you are for their help. Best of all, the wedding industry is practically brimming with a wide assortment of presents that are especially destined for bridesmaids and maids of honors.
Source: http://blogs.topwedding.com/bridesmaids-gifts-thank-special-ladies-life/