High power hand held Laser

http://www.buylaserpointer.com/ed/201508/cat-chasing-laser-pointer.html

Laser Pointer used to be the sole domain of business presentation makers and public speakers, but now they're ubiquitous

http://www.buylaserpointer.com/other-categories/p-119.html

You just need to make this DIY mini violet Lasers engraving machine is connected to  the computer,you will can print any pictures your like with lots of fun. This interactive device will allow you to control all of your engraving projects, from your simplest to the most complex.

http://www.buylaserpointer.com/green-laser/p-25.html

The cheap Green Beam Laser Pointer can be used for skypointers, starpointers. It's cheap and high quality.Produce clearly visible green beam. The 50mw Green Laser are not toys.

http://www.buylaserpointer.com/laser-module/p-39.html

The Laser Diode Modules is suitable for various laser night vision,infrared lighting,military equipment and instrumentation,laser ranger finger,laser medical equipment,etc.