DIY herb gardens. Cut the soda bottle or any plastic bottle with a cover. Turn upside down; attach to board. I'm thinking of leaving the cover to the bottle on; punch in a few holes to drain excess water, but not have the soil drain out also.
A cube laser virtual keyboard allows you to type on any surface. Battery lasts 150 hours and it fits in the palm of your hand. Even has 'clicking' sounds when you type. How crazy is that? Available from ThinkGeek for $169.