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Cheeky but chic luggage tags make checked luggage easy to spot, while giving fellow passengers a chuckle. Flight 001's tags—including this "Are we there yet" rendition—certainly get the job done.
Scratch-Off The World. Scratch of a place whenever you visit it, or use this as a teaching tool. Whenever you teach the students about a place, scratch it off! This could also be used to teach students the locations of different places in the world.