Here we have a useful infographic from a website called Daily Infographics providing information about some of the most recognisable national flags.
History of Union Jack Flag and how the current design combines three older national flags. Operative word being CURRENT !
An advertising agency has come up with a campaign to promote the Sydney International Food Festival: flags made from food typical of each country. The flag of Italy is made of basil, pasta and tomatoes
Infographic: National Flags Explained - OneEurope