mine is similar to Scott's

plus a bunch of assorted odd shaped hoses - the kind of bigger on one end
and smaller on the other end...

an oil filter - once a sharp rock punched a hole in my oil filter.. but I
have a shield for the oil filter

a set of belts

yes... rescue tape - I use it twice... once to fix a hose on mine and once
to fix a hose on a a fellow stranded on the side of the road