Lots of companies will print your custom design on a shirt for you, but that’s so static! No one but ThinkGeek lets you design on your shirt as you’re wearing it. You’ll use the included UV laser to draw any design on your Lazer Shirt Interactive Tee. When you go into the dark, your shirt will glow with the design you’ve drawn. The design will eventually fade away, and the shirt will be ready for your next masterpiece. The shirt is machine washable. It’s available in adult sizes in white only for $24.99. (Photo courtesy of ThinkGeek.)