Yes! I can! This is very cool. I also have my custom search engine linked on a Canadian provinces resource page on my library site. My fifth grade students have a research project, and the purpose is for students to create a short film to convince someone to either move or visit their region of Canada. This is a very cool way to expand their resources without letting them loose on Google. There's too much junk out there, especially with this topic.
The other piece I experimented with was KidRex. I am not impressed. I did a search for horses (kids like to know about horses!) and these were my first few results: