I created this for Easter Egg hunting fun. I also add a reward inside like 5 dollars, so winner winner.
I used PLA for all of it on a PEI plate with painted support on and no brim.  you can print the halves on separate plates for different colors. Be sure to clean your plate with alcohol before printing. The egg is threaded and will need some clean up. after you clean off any lose filament you can start threading it.  The thread starts in one spot only. once you find the spot work the threads back and forth, dumping out any loose bits. For the Anchor I use CA/super glue.  Now for the fun part, put a nice reward inside and screw it into the ground. be sure to have your camera ready. That first look when they realize the egg is not moving is precious. Then you can coach them on how to remove it from the ground and open it. My great niece just giggled and giggled. So precious. 😁