Love White Castle sliders so much that you wish your entire home was redolent of them? Well, consider it granted, you burger meister, because the hamburger chain has come out with its own scented candle ($10). It promises to waft you away on a cloud of "steam-grilled-on-a-bed-of-onions scent." I can see this thing selling well as a gag gift — emphasis on gag — or a collectible piece of kitsch. But do you think there are really people out there who feel relaxed and happy when their house smells like onions and beef? I'm guessing no.