Pixie hollow, webkinz, neopets, and wizards101. Hope this helps!!!!
What Are Some Websites For 6 Year Olds?
There is disney.go.com
There is a website called jumpstart.com where they can create and dress their character, and then travel through a 3-D world and play games. My 6 yr. Old really enjoyed it.
There is disney.go.com or webkinz but you have to buy the stuffed animal for the code to get on webkinz.com