I haven’t found one yet.
My current holy grail is a Bootstrap-like responsive menu that I can use in non-Bootstrap custom themes. I followed the few tutorials on how to do this in the last week, but none of them wound up working (or not working like I expected them too).
I’m going to try Rachel Baker’s BootstrapWP (I’ve read lots of good things about its high quality of coding) and see if I can figure out how to get the menu into one of my custom themes based on Hybrid. I know it can be done, but I’m not enough of a programmer to easily get how to do it. Once I figure it out, I’ll post my solution here.
I like a good-looking menu. I want one I can use across the board for any WordPress custom theme.