Photo: Marshall Troy

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Monbento Box
Since the 1970s, our nation's portion sizes have ballooned. And considering that 54 percent of Americans belong to the clean-plate club, that's bad news. The Monbento box has two stackable, 17-ounce airtight containers that can help with portion control: One rectangular dish works well for your entrée, while the other comes with a movable divider to split small sides or snacks. And the bright colors make it a little harder for the office bandit to "mistake" your lunch for hers. ($30;