<VV> Can you identify these Interior Plastic Parts for me ?

[Charles Lee]

Does anyone know what these parts are that seem to be part of the interior 
of my 1967 Monza coupe with gold interior :

 www.yourbuyersinn.com/Cars/Corvair/UnidentifiedInteriorParts3937.JPG

These look like 357 Magnum bullets made of light duty plastic ?

They may have been used to cover bolts or screws or something like that ?

Thanks

Charlie