Dhansamrat

This is a Balloon Helicopter toy. It is a simple flying toy that uses air escaping from a balloon to spin a propeller and generate lift. 
The toy is typically made of plastic and includes a propeller hub and latex balloons. 
It is easy to assemble by attaching the wings to the central piece and then connecting a blown-up balloon. 
The escaping air causes the blades to spin, lifting the toy into the air. 
It is often marketed as an educational toy that can enhance children's hands-on ability and introduce scientific thinking.