Things You'll Need
Instructions
Examine the bottom of the bobble head's head. You should see a small point that goes inside the spring on the neck.
Check the neck post of your bobblehead. The spring slides down around the neck post, but if your neck post is broken you will need to fix that as well.
To fix the broken neck post, apply a small amount of hot glue and re-attach the piece that fell off. Allow the glue to dry.
Slide the spring down over the neck post and secure it with a couple of dabs of hot glue.
Apply a small amount of glue to the point inside the head and slide that point into the top end of the spring. Allow the glue to set. Once it is dry, your bobblehead will be back in working order.