Just saw a demonstration on (Swiss or French) TV a couple of weeks ago wherein an egg placed in a small (new kind of ?) container did not break when dropped from a crane… (not the flying kind :))
When my son did this in high school, he packed the egg inside a hollowed-out Twinkie, put it in a box, and then padded it with more Twinkies all around. It survived the fall from the third-story window of the school; but when he retrieved it from outside and was carrying it back up to the classroom, he dropped the surviving egg on the tile floor and smashed it.
When I did this in high school, the most successful solution was one of the simplest: Someone took a Nerf soccer ball, cut a hole to the center and closed it over as tightly as possible. He took the egg and put it in there. We bounced it, kicked it up in the air even higher than 20’ while waiting for other people to go. When it was turn we asked if he wasn’t going to check that we hadn’t already broken it, and he said we didn’t need to bother. One of the most accurate solutions, too.
(My entry was a can filled with Cream of Wheat. IIRC it was the densest working entry.)
mumble years ago I used a L’eggs pantyhose container packed with a sponge I had cut into about 1/4" cubes.
I suppose any sort of tupperware type container would work instead. You just lose the style points.
Maybe if you could find a really large plastic easter egg.