I agree.
I approached people with this sort of line: "Are you accepting volunteers for the pharmacy? No? OK, that would be my first choice, but I'm not picky, I'm also hell-on-wheels in a file room." (Maybe not quite like that!

) Alternately, with independent pharmacies: "Do you have any pharmacy tech positions open? No? Well, I don't really need to be paid. What I'm trying to do is get some pharmacy experience before applying for pharmacy school." If nothing else, the second line kept the pharmacists from shutting me down and kept them on the phone.
My prioritization:
#1: Paid pharmacy tech position
2: Unpaid pharmacy volunteer
3: Any volunteer position related to medicine / treatment
4: Any other volunteer position
I sort of ended up with a quarter-step below #2, and I'm thinking about picking up another (non-medical) volunteer position. Good luck.
😀