Any secondary uses for taffy?
This is going to sound odd, but taffy is actually a great ingredient in sweeter coffee drinks like mochas.  It melts into the drink adding sugar and flavor.  I'm a fan of banana for this purpose.

In a similar vein, you could also use the taffy as a chip in cookies.  Chop it up and use it wherever you think banana flavor would taste good.  I could imagine the banana taffy going well in with macadamia nuts.  You might want to consider the taffy as a substitute for butterscotch or white chocolate chips in recipes requiring them.