The kids were quite impressed by some of the popular "Surprise Egg" models, however I was quite disappointed they were encumbered by a NoDerivatives license. Only one thing for it, make my own customizable version free to share and modify. Here it is.
Can be used as a general purpose hollow egg of custom size, or start with a blank slate and subtract your own model for snug fit. Print-in-place, no supports (makes use of bridging for hollow version).
surprise_egg.scad | 4.3KB | |
surprise_egg_blank.stl | 675.0KB | |
surprise_egg_hollow.stl | 1020.0KB | |
surprise_egg_round.stl | 1.0MB |