Discovering a gadget that solves one of your most irritating life problems is cause for celebration. Finding that gadget and discovering you can afford it without any hardship, though? That’s a true victory. And whether it’s a travel hack that’ll change the way you pack your suitcase, or a cleaning tool that requires zero elbow grease, these are a few insanely clever things Amazon keeps selling out of — & they're so freaking cheap.
