I won my physics class egg drop challenge and three years of California MESA competitions in high school using spray insulation foam to make molds of specific eggs.<p>The MESA rules were 14&quot; diameter max, no liquids, no parachutes, dropped from 60&#x27;. I cut a pattern of holes in cardboard and sprayed the foam over the eggs (lubricated with PAM), pulled the cardboard off, lubed them up on that side, and sprayed the other side. I trimmed the whole container to a sphere a little over 14&quot; diameter and then compressed it as much as I could (Literally having someone stand on top of it) and wrapped it tightly in tape.<p>My best record using this method was 32 eggs with 100% survival.