Who among us doesnt have a junk drawer filled with mysterious, miscellaneous, marginally useful knick-knacks? (A survey found that 80 percent of Americans report having at least one junk drawer, though the average household actually has three. )

Maybe yours is filled with old keys, office supplies and coupons for the pizza place down the street. Or maybe, youve got a super organized junk shelf, like the couple in this cute comic: