This origami bat is a straightforward model - but it does cheat by using a pair of scissors, which is not strictly allowed! The traditional origami bat model is quite tricky to fold so we have simplified it to produce this one which is great for children to fold but still very effective.
You could make lots of these and hang them around the room from lengths of thread - very spooky! Or how about sticking one to the front of a Halloween party invitation? You could even make the bat the invitation, by writing on the paper before you fold it up!