I wonder if Bob’s Red Mill store would have the type of grinder you are looking for.
They didn’t the last time I went there.
I have tried so many different grinders but the ones today are so cheap that often when the pods get stuck going into the grinder part, they break the grinding mechanism. I have one that sort of works that I am using now, that has all metal insides, but the pods still get stuck and I have to dig them out all the time.
I just prefer it freshly ground and don’t like having to get out my coffee grinder that I use for spices every time I want some allspice.
Maybe I need to find a small hand held manually operated coffee grinder!