Im having a sweet 16 in a couple months, and I can't think of any ideas for a FAVOR. It is a boy and girl, casual - dressy party, and the colors picked out are blue and purple.
My sister just had her sweet 16 party and what she did was for the kids that were on her court she gave the guys hats and like a little gift like a piece of chocolate. For the girls she gave these little beaded purses like to hold coins and a piece of jewelary inside(not expensive) for the rest of the guest she made little chocolate hearts with 16 on them. She made them homemade and they were a big hit.