I have a real grain grinder, but you could use an old coffee grinder (one of those little electric things that grinds just enough for a pot). You would probably have to grind the corn at 1/4 c a time, but for a try or two it would be fine. Another option is your blender. When I first started, I used that, but it isn't any where near so satisfactory as the coffee grinder - or, of course, the real grain grinder. Something I never tried, but the indians sure did and made a lot of ground corn - mortar and pestle.
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Soaring Spirit
Don't take life too seriously, it isn't permanent