What would be your dream filler episode/arc?

Mine would be inspired kwa another series...

There was an episode in the series Warehouse Thirteen where Pete found a brush that, when he touched it, transported him to a parallel universe where he'd never been born. He had been 'brushed' away from the world and the only way for him to get the universe back to normal was to find the brush (I can't remember where it went) and touch it again. It really was ace... My dream filler episode/arc in Naruto would be for Naruto (or Jiraiya au any of the characters) to find an item that did that. It would be amazing to see how different the world would be if Naruto had never existed and how all the characters would react to his presence if they'd never met him! I'd want him to make the world normal again at the end, though, of course. :P