You can make your own search engine to filter the results from websites that you want to see. I also made a Frugal Search Engine which is below- it searches my favorite deal websites and frugal blogs.
The free customized search engine would work well for moms- it would allow you to personally filter the websites your children can search from, choosing only results from kid's websites you approve. You could also make it your default homepage for your web browser. My little ones can't read yet, so I haven't dealt with that safe web surfing issues yet :)...
If you like my two engines, you can use them for free on your own web pages. Just click on the link of the title and then click on the link that says add this search engine to my blog or website.
Check it out:
It totally works for me! Check out Shannon's blog for more ideas!