Since 1963, Eeyore's Birthday Party is a day-long festival that typically occurs at the end of April in Pease Park. To say it brings out the best and the weirdest in Austin is an understatement.
While it includes live music, food and drink, all which benefit local non-profit organizations, the art is in the creative and colorful costumes, and - notably - very large drum circles.
Still family-friendly (the festival is named in honor of the character Eeyore from A. A. Milne's "Winnie-the-Pooh" stories), it's not quite Austin's version of Burning Man, though in recent years the craziness has certainly amplified.
Some Austinites can remember the original event, which was a fully hippie dippy display with trashcans full of lemonade, beer, honey sandwiches, flower-draped donkeys, and a may pole (the event typically occurs on the last Saturday of April, close to May Day).
For many years the festival was frequented by mass amounts of UT students, but in subsequent years, the annual party has become a beloved tradition in Austin's hippie subculture.