|Make a Wind Sock
You can use a wind sock to find out where the wind comes from.
1 sheet of 8,5 x 11 inch printer/copy paper
1 piece of tissue paper 28 x 28 cm
1 paper clip
1.2 m kite string
Source: Aeronautics - An Educator's Guide with Activities in Science, Mathematics, and Technology Education, NASA, 1998