Don't be caught unprepared. A plunger will help you out of many an embarrassing moment—no plumber required. And despite what you may think, it's not just for the toilet, either. When other methods fail, a plunger can be used to help clear up a clogged drain or shower. A model like this, which comes complete with a stand, can be stored in the bathroom so anyone can discreetly clear up the problem without any drama. Available on Amazon; $8.98.