jetcityorange..
technically speaking.. what i have hanging on my back porch are not tibetan prayer flags..
there are some who would say they are just flags...
http://en.wikipedia.org/wiki/Prayer_flags
but i didn't hang them willy nilly..
they encourage one to think of peace (red) wisdom (orange) love (yellow) happiness (green) courage (blue) and tranquility (purple) as they pass into our home.. and i would hope that they send those attributes from our home to others...
my intention was harmonious with the intent of prayer flags.. though the color sequence isn't...
i believe they still spread dharma.
http://en.wikipedia.org/wiki/Dharma
A mezuzah is different. I wouldn't consider hanging even the facsimile of a Mezuzah on my door frame because it's purpose is different.. and i feel it would be sacrilegious of me to pretend at being someone i am not.. either by inheritance or spiritual choice.
http://en.wikipedia.org/wiki/Mezuzah
I am not sharp enough this morning to come up with other religious symbols that have moved into common usage...
or to be more honest.. i am not willing to offend with those i can think of since some have a very narrow view of religion.
i have chosen wikipedia links because they provide not only the basic info... but links to source materials for those who might want to learn more about words or ideas that have been adapted into common usage.
Who knows what will spark curiosity and further understanding?