Best Egg Drop Contest Shock Absorber?

[bug]

TL;DR Summary: egg drop report

i have an egg drop report, and my contraption is based off of shock absorbant materials (cardboard, styrofoam, and sponges). idk how to draw a free body diagram about this, or the physics behind shock absorbency. can someone help me please? (grade7)

 

[berkeman]

Welcome to PF.

What reading have you done so far on this project? What shock absorbing devices have you found in a Google Images search for such contests? Do they give you some ideas?

What are the contest rules?