Find candid snapshots of strangers and reenact their pose while wearing some sort of furry uniform.
Pack a suitcase for a very long trip then go absolutely nowhere. Stay there for a while.
Write Tony Robbins a letter using only your teeth. In the letter make sure and compliment him on his teeth.
Approach someone on the street and ask them to give you directions to the place they were last.
Sink your feet into the cracks of a sofa and stand there for at least an hour.
Convince yourself that the world is coming to an end. Build upper body strength so you can scale tall buildings and mountains with the ease of an Olympian, eat only the food you've grown or killed yourself, spend an hour a day rotating your eyeballs to improve your vision. Call it the apocalypse diet. No cookbook required.