Millet ("mill-it") is a grain grown in mostly Asia and used as
the bulk of
birdseed for wild birds. Because of its useful weight and shape, it is commonly used as filler for beanbags for juggling, as well as for punching bags and other
sewn oddities. It's also surprisingly difficult to find by itself.
I finally found a place to buy plain
millet for my beanbags. There's this place called Old
Bob's on the west side that
has it. Unfortunately, you have to buy a 50 pound bag...