Last time I started this thread over at IACOJ I picked up some good ideas of handy stuff to carry, so here goes.
Radio pocket, mini maglight on a lanyard and a small box cutter knife, both used many times.
Inside pocket, notebook and pencil, not pen as ink freezes, reading glasses, yeh I know, I am an old fart, a pair of crash scissors and a tin of mints, great for early morning or up close medical calls. Magic marker
Side pockets, extrication gloves, door wedge and hinge wedge, rubber strap, hat LED flashlight
Bunker pants pockets, firefighting gloves, leatherman tool, disposable camera and collapsible hose wrench.
Carbinier'd off my coat, Safety glasses in a zip case.