Re: I remember my PGP T-shirt well!
I was in Canada on the weekend when Phil Zimmerman released his iconic software and I bought 20 or so T-shirts, folded them inside out and later they all departed overseas.
I still have a couple of the original T-shirts. I had a hundred or so printed (very cheap here in South-East Asia) and gave them out to people who asked knowledgeable questions.
Many people owe employment opportunities to Phil, even NSA and GCHQ sub-contractors who were hired to crack Phil's work.
Thank you Phil!