The LaserCube is a powerful, portable wireless laser designed for artistic applications. Popular use cases are something like a cross between installation art and temporary digital vandalism:

(Note: NSFW language, you may want to turn your speakers off.)

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Someone, however, had the interesting idea of using it as a heads-up display for bicycle navigation:

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Or for skiers:

It would also be interesting if car designers were able to use it to "sketch" onto full-scale bucks. Something like this, but where you're sketching unique lines rather than tracing:

The 1,200mW base model LaserCube runs €699 (USD $807), and the more powerful 2,500mW version is available for €999 (USD $1,153).