Container Mass: 137.0 g
Container Dimensions: 27cm/26cm/11cm
Time of fall: 1.07 s
Fall Distance: 5 m
Condition of Egg: unbroken
Egg Points: 146

I found size to be the most limiting factor. We had to make a container smaller than 28cm by 28cm. We could have made our cardboard flaps much bigger and had our container fall much slower because of the increased resistance. This would have reduced impact at the floor and made it easier on our egg.
The most effective part of our design was the cardboard flaps. The flaps balanced the container and ensured that it landed on the right side. They also slowed the container down and lessened the impact.
The least effective part of our design was the sock wrapped around the toilet paper roll. It didn't really add anything to the container except mass, though it ensured that it all stayed together and held the egg more solidly in place.
To safely carry two eggs we would have to get a new toilet paper roll and cut two holes in the tissue with space between them. Everything else would be the same but just add another hole for the second egg.

Egg Drop Post 1

For test day we constructed a container to allow us to safely drop an egg from 5 meters. Our container was a cardboard box lined with bubble wrap. We had a smaller box filled with cotton balls inside the bubble wrap. Inside the cotton balls we had a small plastic container that held the egg. When we dropped the container from 5 meters on test day it smashed the egg. We decided to start over and design a whole new container. We decided to use a toilet paper roll. We cut a whole in the side of the roll through the tissue paper and through the one side of the cardboard structure. We placed a sock in the hole and wrapped it around the rest of the roll to give it support. We tested this container and the first time the egg was whole. The second time the egg was smashed. So we added cardboard flaps on all four sides to stabilize and slow down the fall. We tried it again and the egg was unbroken.