Extra bag in plane cabin

I'm going to tell you a small trick to have some extra space in plane cabin (taking it to the seat) in case you ran out of it due to baggage restrictions. Since last years, most companies (such as Ryanair, Wizzair...) allow you to carry a bag from the airport Duty Free shop, and they dont check what is inside and even do not measure it, so you can put clothes, presents, souvenirs in there and you won't have any space problem.

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In order to get the bag, you should buy a heavy cheap thing, such a plastic bottle of water and that will do the trick!