Pry the walnut shells apart carefully. Clean the walnut meat out. Smooth out the surface of the inside
of the shell. Glue the marble inside the shell. If it is a deep shell, you may need to add a foam
piece so that the marble clears the edge of the shell. Decorate the outside of the shell to make
your creature unique. Find or make a slanted surface and race the creatures. The marble inside
the shell allows the racer to slide easily.
References / Source:
GSLC Pow Wow 2008