This is with a tired-late-night-mind... I have a simple, cheap idea.

Raise your hand if you wear hats often, especially at events? I wear hats often cause I am fair-skinned and balding, especially at Highland Games and such cause I am in the sun all day. I will have on either a tam, balmoral, or baseball cap (haven't worn a glengarry since i was a wee lad). Anyway, let's put a small "X" on the back. With my baseball style cap, I would just put a white "X" on the back with fabric paint. For the others, I could just take some white ribbon and just pin and "X" there.

These markings don't need to be huge either cause each of us here will know to look for them. Keeping them small will keep them from looking odd too. And if other people see them and ask, then that gives a great opportunity to promote this forum.

thoughts?

-ian