Hi Michelle,
My daughter just had a princess birthday party and I almost used www.buycostumes.com for pre-made goodie bags. They have a great selection and various prices. I used them last year for our Halloween costumes so I know they are reliable. I've got an online coupon if you want me to e-mail to you. Anyways, I ended up going to the party store and buying those chinese take out boxes in various colors and putting a feather boa, lip gloss ring, and a beaded mirror in it though. I really wanted to put something in there that wouldnt be thrown away. I know when my daughter gets one, they're usually filled with a bunch of junk. Its a waste of money in my opinion. So I spent the extra $$ to get the girls something they would use. Good luck!!