Fiddlestick

"The error in his speech was just a fiddlestick, he continued on with the presentation."

"Uh, let me think, fiddlestick, what was the name of that movie again?"

"The new employee seems to use 'um' and 'fiddlestick' a lot during their speeches."

"The scout showed the group how to use a fiddlestick to create a fire without matches or a lighter."