Hi H.,
I love birthday parties. You could do a disco theme. One year we even hired a DJ - it was a little extravagent but fun. However, it could be done with just a MP3 player or ipod. Another idea would be to do a mini spa party. Just paint finger and toe nails and give each girl a little goodie bag with some chapstick and misc stuff.
I also am a member of Noah's Ark Animal Workshop - a Traveling Stuff-n-Fluff party or Bella Bee Glamour Girl Workshop - All come to you. We provide you with the party leader, activity and take home gift all for one price. It is a great value. You can find a local member. The parties are tons of fun. The Glamour Girl party teaches inner beauty as well as doing a little make-up application. If you want to check it out you can look at my website www.ananimalaffair.com
Another simple idea is a small sleepover - you can do twister, movie and make pizza.
I have done all of these ideas and all the kids talk about how great the party was.
Good luck and enjoy your daughter's party.
E.