If you want to find a good ICO, looking for 3 main point:
1. Team dev is star ?
2. Maximum raising during ICO. Too high => might lose money because price drop when listed on exchange
3.Their product ? I should have a real product first, and they will do anything to follow their roadmap.
This should pretty much be your way of thinking for ICO investments but overall it'd be you doing your homework on it if it really can be something big.