Don't toss those used coffee grounds just yet—they can come in handy for a range of uses around your home.Credit: Boy_Anupong / Getty ImagesBrewing coffee is one of life's greatest, simplest pleasures. Dealing with the leftover coffee grounds, though? Less than ideal. But, before you send your used coffee grounds to the compost bin or trash, it might be worth hanging on to them for a few key uses. Used coffee grounds can do everything from scour…