[evadoraz]

For example, a flat piece of wood that will morph into the shape of a cowboy hat when come in contact with water.

Basically manufacturing items (wood, carbon fiber, etc.) that are designed to act in a specific way under specific conditions, rather than leaving it up to chance.

[wmeredith]

IKEA instructions 10 years: add water.

[fit2rule]

Think flying things. This technology would usher in a new age of flight.

[cfontes]

This would be an amazing use to it.