everything turned out great! set my ender 3 to 0.1 layer height, 40% infill density, and 40mm/s print speed at 205* for eSun PLA+. Nothing got stuck/etc: wheels spin freely, the dump rotates up/down, and the egg opens/closes (though the latch is a bit strong, not sure my 3.5 yr old will be able to open it by himself, though if you "press up" on the side of the egg with the female part of the clip, it's much easier to open). Thanks!!