I like the public typing part of it, especially as some on the forums have tried it, and shown it to not only be easy, but entertaining as well. The procedure is as follows: dig your old typer out of the garage, attic, wherever and tune it up, or beg, borrow, or steal one somewhere, take it out into public somewhere, and type a letter to someone you know. Put the letter into an envelope (preferably having addressed the letter by typing on the envelope) put a stamp on it, and mail it to whomever. "Public" can be whatever you like; I will be working that day, and am thinking of hitting a coffee shop that evening and doing it there. Manual portables are best for this - your Remington 5 or IBM Selectric would be difficult to carry, and the IBimmer would require electricity. I am thinking of using my 1951 Smith-Corona Skyriter. I must warn you that this may take some time, as a number of conversations with total strangers may develop. It is fun, though. I have 12 folk that I letter each year, usually doing 11 beforehand, and saving the last one for public, mailing them all that night.
One other thing while I am banging on the evil computer keyboard - there is a practice among the typewriter nerds called "typecasting". This is a practice of typing (yes, with a typewriter) a blog thread on a blank 5X7 index card, scanning the card to a .jpg and posting it in one’s blog. For an example, see www.strikethru.net - I am thinking of trying this on typewriter day myself. We will see.