Wow, this is too cool! ;D
But, I do have concerns; It might not be so safe to play with, as anybody could get blinded by laser light!
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^ Not if you cross your eyes as you use it.
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MYTHBUSTERS source
Conclusion: Myth Confirmed
While it is unlikely most lasers used in toys, games, and laser pointers can permanently damage your eyes, it is theoretically possible so caution should be exercised. However, spilt second exposure from type II or IIIA laser pointers will not result in any permanent damage. Shining a laser pointer in someone’s eye performing certain visual tasks can cause flash blindness and result in an accident. Children should never play with lasers unsupervised and no one should use a laser that is not properly labeled by the United States Food and Drug Administration. It is possible to order very powerful lasers over the internet and there use is definitely dangerous.
The laser is a potential risk to your retina, or observers retinas.
Anyways, you can just play with it until you need glasses (or it cuts you in half).