Create one using Inkscape, save it as SVG, import it to Blender and extrude it etc:
or search images, convert to SVG, same process
Luxxeon3d’s method using 3DSMax
Maybe using spirals, not sure which (or how).
or using Wings3d:
(Missing PDF) incomplete process (quite likely would involve Blender’s Spin tool - especially elevating the spin off the grid as shown here)
What would be the best way to do it in Blender?
Maybe a modified starball?