You will need:
Dry beans like Navy Beans
Cut your fabric into two 6 inch by 6 inch squares and
pin the squares together with the pattern sides facing each other.
Sewing about 1/2 inch in from the edge, sew the fabric
together all the way around except for a small opening about an inch wide.
After removing the pins, turn the fabric inside out at
the opening you left.
Put your beans in the bag and sew the opening shut.
Optional: Instead of sewing a square bean bag you
could sew the material into a heart shape for Valentine's Day, a Christmas
Tree for Christmas or a pumpkin for Halloween.