I encountered the funniest thing when I visited my dad's factory in Vietnam last summer. Before you go into the processing plant, did you know one has to either change into their working boots, or use disposable shoe covers?
Haha... its really interesting. It is made of plastic bag but it fits smugly around your shoe. I forgot what the point was. Either to keep the plant clean because it is a food processing plant or something about to prevent the transfer of electricity. Something like that.
Cody wears one too in his work place which produces electronic stuff. He use to have shoes of his own but some poor fellow stole it from him. So now he has to wear plastics!