Crazy for Quatrefoil

I am obsessed with this shape I discovered when visiting different Catholic churches while traveling.  I noticed it once because it was a repeated element in some stained glass windows, and I set out to figure out what it was called.  After searching Google for a million variants on "clover," I eventually learned that it was called quatrefoil (literally translated, four-leafed), and it is intended in church architecture to be reminiscent of the cross.  The shape can be deeply or more subtly lobed, and is sometimes barbed.

You sometimes see it repeated to form a cool pattern (which should not be confused with arabesque, an Islamic or Moroccan symbol/pattern).

I'm not the only one obsessed with it, either.  People use it in papercrafts, home design, and jewelry.  It's simple, beautiful, and works as alone or as a pattern. 

Given that I want to put it EVERYTHING EVER, it's clearly associated with Christianity (but not in an in-your-face sort of way), and it's a Celtic symbol of good luck, I think it would be perfect for a wedding motif!  I think a single one inlaid with "A + L", like the example below, would work well for a lot of things. 

The most obvious place to use a motif is on your paper goods.  We could use the shape for die-cut labels or tags (the top one is a circle, but you get the idea):

On invitations:

On door hangers for guests' hotel rooms (Ok, so the patterned one is arabesque, but quatrefoil would work too):

On signage:

On thank-you cards:

And on favor bags:

Obviously, quatrefoil-ing every single thing in the wedding would be overkill, but I would like to incorporate it here and there.  Repeating elements is a pretty way of tying everything together neatly.

If nothing else, I think a hand-made stamp and a quatrefoil die (to go in a scrapbook die-cutting machine) would go a long way (think favor bag stamps, invitation seals, candy bar signs).  I have also been thinking of using a die to make a stencil to etch some of the glass candle vases, which would be a bit more subtle.  We are a long way off from designing any paper suites, so for now, I am using it as the background on our wedding website!