This egg shaped puzzle will keep you busy for at least 20 minutes.  I made enough room to fit money on the inside of egg to up the stakes for solving it. 

Print settings

I recommend printing with a 0.4 mm nozzle and A  0.2 mm layer height. The egg part will need some supports on the bottom to help hold the shape but that is it.  Can be printed in almost any filament type. I printed at 15% infill but that is about as long as you should go in terms of infill.  

Extra

The notch on the inside of the egg might need some sanding depending on your printer, to fit into the maze piece. 

Have Fun Solving!