you can do what orangutans do to fish ants out from an anthill using a slender blade of grass. what i do is to straighten a sturdy paper clip, fashion one end into a triangular handle, and crimp the straight end into an acute angle thus:
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suffices to pull anything out from sac remnants to pressure bar.
i later bought fancy tools like long nose pliers, but more often than not, these are rather useless in practice, slipping and never managing to get the same impulsive tug that the crimp manages to deliver from under the pressure bar's curved end. in 8 out of 10 cases, have to go back to my quiver of orangutan clips i fashioned in my pre-tool days

bottomline: overspecialized tools are sometimes useful, like vac wrench, but a specialized tool for every purpose that arises is best improvised at the bench.