Inspired by these Snap Eggs from DaveMakesStuff and wanted to make my own versions from scratch for some last-minute Easter gifts.
5933470 - Egg Snaps
5934001 - Textured Snap Eggs

Two version available:
Smooth - uses friction only to hold together; good for non-adult-strength hands.
Snap - uses a small detent for a lock; holds together better. May need to take a little wearing in to make easier.

Oriented for easy printing. No supports needed. Brim/Raft may be beneficial due to small contact footprint on first layer.

Creality

Ender 3

Doesn't Matter

No

0.2mm

10-20%