Vision Event
Go to a lonely place and rub a stone in a circle on a rock for hours and days on end.
(From Shaking the Pumpkin: Traditional Poetry of the Indian North Americas by Jerome Rotherberg)
Just thought of these:
Learn the lyrics to c-h-i-c-k-e-n and sing it all day long.
Keep a tamborine on your person for 1 week. Play it as often as possible. Get other people to play it.