Lots of packaging is designed to be opened with your bare hands - and though those design intentions are good, sometimes the execution just plain fails. So, from an online store appropriately called Useful Things, here's the 6-in-1 Multi Opener tool for all those packages that are supposed to be tool-free. Jar tops and twist-off bottle caps, those tiny tabs on safety seals, pull-tab cans, and a blade for sealed bags and packets - this will handle them all, a backup plan for bad design (or just poor manufacturing tolerances). I also like the title of Core77's post about this product: "Theoretically Unnecessary, Actually Necessary Tool Design." Yep, sounds about right!