So have been watching Sherlock while being crafty:
|Left to Right: Trumpet Flower, Dr Who poster, Thistle, Lotus|
Origami is a good way to relax and quiet the mind. Once you learn a few simple patterns you can give your hands some idle (yet artistic) busy work, and free your mental faculties up so they can relax.
Also? You can never have too much Origami paper. Just saying :)