Made these guys out of Milliput then sanded the "Egg" smooth once it had hardened and put a few coats of primer over it with a few coats of spray on polyurethane over a few days.
Made a surprisingly successful one piece mold for the egg. Really surprisingly, because the second I had made it, I was immediately thinking it was going to fail. Put it didn't.
First casting of the resin hugger in the polyester egg mold was a bit out of position. Need a bit more of the 2000 sandpaper also.
I'll probably do one when I buy silicone next. I have this egg timer that you boil and it looks to be the exact same shape and size as the thing David coughs up at the end.