Burlap works well and does not interfere with the seasoning patina on well used cast iron.
Here's a few of my cast iron skillets and dutch ovens.......I collect Griswold's and others.
Dutch ovens were imported from Europe 300 years ago and sold to American colonists by English, Dutch, and German traders.
George Washington fed his army from Dutch ovens. Paul Revere is credited for developing the flanged lid. Lewis and Clark carried Dutch ovens as they explored and mapped the West, and Dutch ovens were used by "forty-niners" for baking sourdough bread during the California goldrush.