Posted by GreenLantern555

I'm sure he has a bat-condom in there...

Posted by TheBatman586

Explosive batarangs.

Posted by BoOMbOoMpOw

Grappling gun !!!!

Posted by FadeToBlackBolt
@GreenLantern555 said:
" I'm sure he has a bat-condom in there... "
And because of prep-time, it can withstand even the most "Wonderous" of thrusts.

Also, the Bationary: Guide to Picking Up.

Say "I'm Batman"
Wake female from her awesomeness-induced faint
Commence relations
Posted by Wattup

I always loved his grappling gun, especially the version in BTAS.

I remember watching the audio commentary of one of the show's DVDs and the producers and writers sighed with exasperation when Batman pulled out the gun, like it was his deus ex machina that always got him out of jams.

Posted by Rudyftw

The Batman Utility Belt instruction manual.... 

Posted by Full_Spectrum

keys to the batmobile...

Posted by DH69

batman credit card...because it makes me laugh

Posted by Jotham

Yeah, the grappling hook or gun is pretty awesome.

Posted by bianconerogt

The kryptonite ring, that way Batman can put the smackdown on sups!!!

Posted by Gambit1024

Meow Mix.
Posted by sj_esposito

I don't know if this counts or not, because it's Dick, but I've always been a fan of Dick's escrima sticks.