If you ask a six year old what she wants for her birthday, you're likely to get some pretty interesting requests. What I like to do with my daughter is to ask her what gifts she would like, but also to give her some suggestions.

1. Books are a great gift for a six year old. She may be in Kindergarten or the first grade and learning to read quickly. Some favorite books for six year olds are E.B White books like Charlotte's Web and The Magic Tree House series.
2. A Watch. Six is just about the age where kids learn to tell time. A fun watch that has hands is perfect. I really like the Swatch Crazy Me watch. It's colorful, fun and perfect for a six year old girl.
3. Softball Mit and Ball. Teaching your daughter the fundamentals of catching and throwing is good for her development and it's a great activity for fathers and daughters to do together. 
4. Computer or Laptop. You may have a family computer, but if everyone spends as much time on the computer as we do, then each family member will want their own. There are lots of great educational sites like Noggin and Kidzui, plus Webkinz is pretty good as well that a six year old can master.
5. Jewelry making kit. Six year olds love crafts. Even if she doesn't have her ears pierced (I think most six year old girls do not have pierced ears - ours doesn't), she may still love a jewelry making set for clip on earrings, bracelets and necklaces. 

Our six year old daughter asked for a cellphone, chihuahua, and pony. We didn't think these were practical or appropriate, so most likely it will be the watch this year.