There's a shop named Costume Rental at Needful Things in Pangea. The door is at ca. 77/73, that's in the western half of the first parallel street to where you land. Use the teleporter to go one floor up. There's a box with five textures which seem to be original Cornflakes textures; one is a double (2 and 4 are the same). I've used the same textures for my furniture.
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