What a great thread! I can't believe I've missed it until now.
I just wanted to add this (I don't believe it was mentioned above) -- a very nice and appropriate greeting for a joyous Jewish holiday is:
Translated, that means, Happy Holiday. I would love for SU! to have that greeting. I have it from Zum Gali Gali, I believe.
I am such a sucker for Jewish stamps. I pick them up whenever I see them. I try to stay away from the online sites or else I buy everything in sight!