What other countries venerate their flag like the US does?

As an American, I've often heard my non-American friends make comments (sometimes joking, sometimes disparaging) about the US and our obsession with the Stars and Stripes. I get it, we really love our flag. We have special protocols and rituals about how to raise, lower, display, fold, store, and dispose of our flag. Many of our patriotic songs (including our national anthem) are about the flag. School children regularly swear loyalty to it, and there's hardly a populated place in the whole country where Old Glory isn't within view.

I get that to an outsider, it seems like overkill at best, and cultish devotion at worst. But are Americans unique in this regard?

Are there other places with similar flag codes? Do citizens of other countries (not just their governments) adopt their flag as a design motif, incorporating it into their clothing brands and yard décor?

I guess I'm just curious to know what other peoples' relationships to their flags are really like.