First off, welcome to the fire newguy.

Second, I would follow Alton Brown's (Food Network) advice...stay away from uni-taskers. Try to carry things that are truly multi-taskers. Wire, duct tape, paper clips, feminine hygiene products and so forth. Don't go to far overboard or you will end up like the French dude someone posted about earlier.

2 cents
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"Its not a matter of being ready as it is being prepared" -- B. E. J. Taylor