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...