Meditation Imagination

Every once and a while I like to challenge my mind. While imagining something can be fairly easy - it is far harder to simultaneously conceptualize something in it's entirety.

Start easy. Relax, close your eyes, and block everything else out. Now begin imagining a wooden pencil. Build it up. Start with the graphite core. Hold that in you mind as you add the wood, and the yellow paint, and the eraser, and the metal bit that holds the eraser on. When you have the entire pencil, every part of it together, in your mind, just hold it there a long as you can. Your mind may be tempted to focus on just one part at a time - but you must focus on every part at the same time.
Once you've got that, work your way up to more complex things. If you want a challenge try skipping to something really complicated - it's exhausting.

If you're wondering where I got this one, I got it out of the Ender's Game series by Orson Scott Card. Near the end of that series the (totally sci-fi) theory is posed that if a being could hold the entirety of an object in their mind, then they could essentially teleport that object anywhere in the universe. This was, of course, impossible for any human mind to do. But just for fun I like to try to try anyway.