"People put it in a tray and forget to put it back in the bag, " she said, adding that hundreds of laptops are left in busy airports each week.

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The author said that if you cannot fit the turkey and brine solution in the bin at the bottom of refrigerator, you can put it in a garbage bag (or two).

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"My husband teases me that I'm too vigilant when I buy turkey and put it in a plastic bag and put it on the bottom shelf of the grocery cart, away from everything else, " Undurraga said.

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As a back up, it is always good to put a couple of generic presents in the bag, say a couple of board games.

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He was not a risk taker, she said, and that made it unlikely in her view that he would have put himself into the bag even as a personal challenge without making sure he could get out.

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At some point though -- Kadyrbayev said it was later that night, Tazhayakov thought it was early the following morning -- Tsarnaev's backpack was put in a black garbage bag, lugged outside, and thrown in a dumpster.

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If we were doing it again now, the material would be taken out in its soil matrix, put in a plastic bag and kept cool.

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