I'll admit that I didn't even know there was a National Punctuation Day, and I also didn't know how to celebrate it. According to the official website, in order to celebrate National Punctuation Day, you should:
Take a long shower or bath.
Go out for coffee and a bagel (or two).
Read a newspaper and circle all of the punctuation errors you find (or think you find, but aren’t sure) with a red pen.
Take a leisurely stroll, paying close attention to store signs with incorrectly punctuated words.
Stop in those stores to correct the owners.
If the owners are not there, leave notes.
Visit a bookstore and purchase a copy of Strunk & White’s The Elements of Style.
Look up all the words you circled.
Congratulate yourself on becoming a better written communicator.
Write an error-free letter to a friend.
Take a nap. It has been a long day.
I'm sorry, but any Punctuation Day celebration that doesn't involve overt mockery of those who can't write "good" isn't worth my time... although the meatloaf baked in the shape of punctuation marks looks... also not worth my time. Cookies, hell-to-the-yes. Meatloaf, not so much.