“Mnemonical” is not the correct term, but here we go:
What names, places, etc always provoke the same grey matter response for you? For example:
Every time I hear NPR reporter Eleanor Beardsley’s a name, my brain seizes upon a certain song.
What might that song be? (No hints, as I think this is really easy).
A bowling alley/bar located on my street corner is called “Slocum’s.”
What phrase might this name invoke for a BBC aficionado?