Step 2: Getting the Lens From a Laser Pointer
The focus lens of just about any laser pointer will act as the macro lens on the microscope stand. Don't waste money on an expensive model; the lens from the $2 laser is fine. EDIT: To achieve higher magnification (up to 375x), use a second lens!
To get the lens from the laser pointer start by unscrewing the front cone and the back cover of the tube. Remove the batteries. Using the eraser end of a pencil, push the innards out of the front of the tube. The front of this assembly (the side without the spring to contact the batteries) is where the focus lens sits. Unscrew the small black piece of plastic in front of the lens and the lens will come free.