What can I do to make my daughters birthday fun for the little boys that will be there?

Her birthday is in July, but i like to get started planning it a bit early. Anyway this year her theme is "a mid-summer nights birthday". Her birthday is 7/17. It will be on a Saturday in the evening. Probably startin at around 5:00 and will last until about 8:00. It's like a sparkly fairy type thing. There will be 6 little girls ages: 6yrs, 4yrs, 2ys, 1 1/2yrs, and 6 months. There will be 5 Boys ages: 9yrs, 3 1/2yrs, 2yrs, 1 1/2yrs, 6 months. THe bigger boy and girl are her cousins andthe boy prob wont do many of the activities. I was going to for each of the girls get tulle tutu's and make/buy wands. And give theme other things fairy themed (coloring books/re. books/crayons/ chapstick ect.) And then I'm going to make cookies around the theme. I'm having a problem figuring how to gear this for boys. The boys have to be invited as well as they are the siblings of the girls there. And their parents are our close friends/relatives. How can I include them in the theme. I know there are boy fairies in the stories but I am certain their dads wont be happy if I buy their sons skirts and wands!