Model:
Two motors with small (1*1-2*2 sm) mirrors fixed with small angle.
Case from old CDROM:
Laser pointer with soldered wires and 25 Ohm resistor:
All components fixed with glue and bolts.
Fixing in the PC case with standart bolts:
Hole in front panel closed by plastic or acrylic (0.5mm).
Something like...
Few pictures: 1, 2,
