First, get to the Great Lift area in Thousand Needles. Wait for one of the lifts to go down and come back up. Try to jump on the lift as it is coming up. If you are successful, you should fall through the roof and go to the wooden floor. Do not move. When the lift goes down you will be standing at the top of The Great lift. If you move, you will fall and kill yourself.
When you are in Thunder Bluff or any other area that has a lift with a roof, wait until it goes down. When it starts coming up again, jump on the roof before it gets there and do not move. After it goes back down, you should be floating in mid-air where you hit the roof.
Press [Esc] and put the pointer under the "Logout" option. As you select to logout, jump. Note: This will not work in inns, and your timing must be precise.
Go to Thunder Bluff. Go to the lift that brings you down to the Stalkers (lion creatures). Get to the edge. As the lift comes up, jump and hit the very tip of it. You will float in mid-air.
First, get the Mining skill and a Miner's Pick axe. Then, find a mineral vein and stand on top of it while you mine. Mine until there is nothing remaining in the vein. The mineral vein will disappear and you will float in mid-air. If you jump, you will not be floating anymore.