My 8 year old daughter loves singing along with Youtube, we've bought her a couple of microphones but ....?

both had a pretty short life. Is there something robust we can get her that doesn't cost too much. There are a few on the market but you have to sing along with Hannah Montana or High School Musical. She doesn't like either. We may get her a Karaoke machine later on but for now is there a cheap robust mike that we can plug into the laptop for her ?. Being 8, there are a lot that are too babyish for her.