Quite the Quilt I

At current market prices, here are some of the cheaper crafts that count toward this achievement. (Some form of bandage will probably always be cheap.) Prices will fluctuate, so these may not always be the cheapest.

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• Linen Bandage
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• Wool Bandage
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• Mageweave Bandage
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• Netherweave Bandage
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Achievement ranks:

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• Quite the Quilt I (100 crafts)
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• Quite the Quilt II (500)
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• Quite the Quilt III (1000)
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• Quite the Quilt IV (2000)
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There's also an achievement called Uncertified Nurse, so you might want to start with 500 Wildercloth Bandages

Unraveling cloth counts toward the achievement, so unraveling Tattered Wildercloth into [item=192097] seems like the best way to do this in Dragonflight while coming away with an item you can actually use afterwards. Unfortunately a multicraft still only counts as one. If you still need the bandage achievements, you can do those first.