When my daughter was 7 (her golden birthday!) I took 20 kids to Build a bear and they all made a bear. The best part was afterward, we caravaned back to my house where I had hired a few local teen to help the girls paint T shirts for themselves and their bears. We also made necklaces and bracelets for themselves and their bears. I ordered pizza and had cake. Everyone had a blast and had a lasting memento of the party. If you don't want to do the driving - find a local Noah's Ark representative and they will do the animal making at your home.
I have also done a beauty party. I asked moms if they would be "manicurists" and "pedicurists" to do the girls. Also, I had 2 moms who did hair and they did updos for the girls and 2 other moms did makeup. Afterward, we did a fashion show with me at the end of the "catwalk" taking digital pictures of each of them that I sent home with them. The girls brought a nice outfit with them that they could wear for the fashion show. Afterward, we went out to a local restaurant (Beggars for pizza) because we were all dressed up and needed somewhere to go. The kids had a blast!
Good luck and don't be afraid to ask for help from the other guests parents.
S.