Baby's First Mjolnir (Rattle) - safer and no-glue version

Wanted to print Mjolnir for my friends newborn but the hole closed only by the glued hilt did not feel safe. So I closed the hole - you have to add some marbles or other rattling items during print and they are safely enclosed by top layers and can't get out unless the head is broken to pieces which should be quite hard to do for small children.

Then I added screw threads so no glue is needed. It holds quite tight.