I love grinding my feet into the sand when I am at the beach.
Lots of people can't go to the beach.
So, why don't folks get a plastic tub, fill it with sand, and grind away?!
Exfoliate!
I could make millions.
No, the sand will get nasty after one use.
Folks will have to buy a new bag of sand every time?
That's not practical.
But I could make millions!
No, I won't.
Where's that cheese grater? I gotta shave this leather off my heel...