IF you happen to get the plastic sheeting kind - like the (awesome) stuff I sell....fold it gently in half, and shine your laser through it again....it doubles the effect - fold it in 4ths - viola ! Pretty neat stuff !
I took some line generating stuff out of my dad's broken LCD screen, woop
Do all line generators go like . . . . . . . . . . . with lots of dots or do some actually have a line like _____________ that?