sigh_fi here are some non-cheese ideas for your new grater:
apples, carrots, nutmeg, zuchinni, potatoes, cinnamon sticks, ZESTING citrus fruits (lemons, oranges, etc.), chocolate, garlic, ginger, or maybe make some soap on a rope.
"Send negative away, now not later,
with my magical mystical grater,
Banishing the bad, just as I please,
I'm grating a candle, not my cheese."
(learn more about cheese-grater spell casting
here)
I hope you're inspired.