There's a reason Batman didn't have a "utility keychain".

<img src="/images/graemlins/grin.gif" alt="" />

For my comfort I simply cannot stuff all sorts of gear in my pockets. Even so, I've managed to include a Ritter microlight and a whittled down Fox40 on my spare key chain in my left pocket, and a mini Rittergrip clipped on my right pocket.

Besides my cell phone, everything else goes into my "man bag" at work, or my backpack when out camping or hiking.