No matter how hard you try, little hardware pieces always seem to end up in a junk drawer or open box where you prick your hand anytime you have to sift through it just to find the right size washer or nut. Here's a storage idea that re-purposes those plastic jars you tend to collect in the trash while also putting to work that useless space under your last shelf. Screw the lids under a shelf, load up your jars with whatever small bits you need storing and twist the jar onto its lid. The jars will hang from their own caps, screwed into the…