If you are looking for a perfect little treat for all your bridesmaids while they are getting primped on your wedding day, why not give them an edible "THANK YOU."
I just think this sweet cookie bridesmaid dresses that comes to you individually wrapped with a box that says "Thank you for being my bridesmaid" is the perfect little extra for all the women who are there to stand next to you on this most special day.
Casuesweets.com also has numerous other designs that would be great as wedding favors, for parties, etc.