it's been many moons since i used the thing (new house getting in the way of fishing BIG time at the moment), but:
wire leaders (just in case)
zap-a-gap & grease
mini binocs....sometimes a camera, but after I trashed the last one I'm in the market for a new one....
probably forgetting something but that seems about right.
(mine is made by predator...large enough to hold the big millstream boxes i favor)