This is somewhat covered in the
Initiation Gifts thread, but thought a different title would be less confusing.
I don't know if this is completely appropriate, but there is a tie available through the Mount Vernon Gift Store that might be great for a KKG's Significant Other. I would think that the man involved should ask a Kappa first, though. It's the one on the right, blue on blue:
It's a repeated copy of the key to the Bastille, and backwards from the KKG key, but the colors seemed great.