Drone safety remains a big issue for drone operators. Solutions such as the Mayday are designed to give you peace of mind as you play with your quadcopter. The Mayday uses machine learning to detect when your quadcopter is crashing to deploy a parachute. You can program various servo release motions to protect your quadcopter against a crash.
The Mayday can be used as a standalone device without a connection to a flight controller. It is simple to install too. More information is available on Kickstarter.