You will need

Boiled eggs

A selection of materials (rice, bubble wrap, cotton wool, carboard)

Plastic sealable bags 

Method 

Place one of your materials (bubble wrap etc) inside the sealable bag. 

Put the egg inside the bag. 

Hold the bag as high as you can and drop it to see if the egg cracks. 

Repeat for each material. 

Which material would have been best to soften Humpty Dumpty's fall?