Although some of the restrictions for the classic egg drop project vary, some of the same prinicples found in this design might be applied to your own device.
The winner for our competition was determined based on the highest P-score. Where the P-score is equal to the below equation (h being the maximum height survived, m being the mass in grams and V being the volume in cubic centimeters). I think my device ended up with a score of about 430 (more than four times the second place score).
Step 1: Materials
2 toilet paper rolls
1 manila paper folder (any kind of thicker paper would work just as well)
5 yakitori skewers (long thin sticks)
some thread (optional)
hot melt glue gun (not totally necessary but helpful)
x-acto knife (again not necessary but helpful)