Vitalik Buterin mentions Etherisc insurance products as current best use case of Ethereum.
When asked by a journalist about the current best use cases for Ethereum, Vitalik Buterin calls parametric insurance like HurricaneGuard (powered by Etherisc) "most interesting stuff that is really hitting people"
Etherisc decentralized insurance protocol DIP provides uninsured people with basic insurances like crop or natural disaster insurance.
They also provide flight insurance and the first passengers who had delayed flights have already been paid.
Etherisc DIP currently has a marketcap of below 5 million USD. These are the type of investments that can yield 100 to 1000x gains. Look for what nobody else is looking for.