What you need:
black cardstock
crepe paper streamers
tape
Trace the bat pattern below onto the cardstock and cut out the shape.
Cut about 5 or 6 streamers that are about 2-3 feet in length, and attach them to the back of the cardstock with tape.
This is also a catchy tune if you want to discus echolocation and how bats get around: https://www.youtube.com/watch?v=bAvoz_ofoeo
The streamers even make a "wing flapping" sound which the kids thought was pretty cool!
View the bat template here: https://drive.google.com/file/d/0B3mVQkOWNM4ocmtEOXRPNEE1Qkk/view?usp=sharing