Simple and efficient solution

Problem:
Children usually don't feel like brushing their teeth.
What's more, the minimum time generally recommended by dentists to provide a thorough teeth brushing is two minutes.
How can you persuade a child to brush his teeth for so long?

Solution.
A musical toothbrush. The clip plays for two minutes.
Simple, useful, and amusing.
I think it's great.

Here is the website.