I think this video by the Austrian government is important to convince children to stay at home and wash their hands. If they understand it, they will meticulously remind their parents to stick to the preventive healthcare recommendations.
A real-time mobility visualization could help people to imagine how many people are actually still not following the quarantine advice by governments. The more movement, the worse the mascot will look like, the less movement, the more the mascot recovers. Google could use their GPS data of their users (aggregated and anonymized of course) to feed this visualization. An alternative to the mascot could be a persons hand which is shaking (from all the movement of the human population) which makes it more difficult to insert a key into a keyhole (representing the key to solve the corona pandemic).