DIY Flying Paper Bat Template and Tutorial from The Paper Fairy here (in Spanish, English and German). Go here for the template.
DIY Crochet Bat Bow Tie Tutorial and Free Pattern from Good Knits here. At the link you can see more photos where the bat’s little ears are sticking out. If can’t crochet you could always make the really easy DIY Felt Bat Bow Tie here (and reader tracerracerx’s version here).ki
DIY Easy Bat Wing Shrug for Halloween from My Poppet here. Or for dress up or because.