Never use the U. S. flag for receiving, holding, carrying or delivering anything. 

The U. S. flag should not be embroidered on such articles as cushions, handkerchiefs, and the like, printed or otherwise impressed on paper napkins or boxes or anything that is designed for temporary use and discard; or used as any portion of a costume or athletic uniform. 

Advertising signs should not be fastened to a staff or halyard from which the flag is flown.