Here is a blog article with many links to apron patterns. Also, some of the links for other kitchen items.
Long time ago a read a blog post. I can't even remember where it was. The lady said she decided to be a stay at home wife and that she felt angry because people treated her like she was doing nothing. Then she started wearing an apron and said that after that everyone treated her like she was busy and doing work. So I guess an apron is a kind of uniform.