I hope you will like it and get some new ideas... pls vote 5 stars :)
Step 1: Before We Start...
Step 2: Mirrors
I found nice 1cm mirrors (not-first surface) with some adhesive thing on their back side (useful for the laser traps :D)
no, I'm just kidding, mirrors can make some cool effects!
Step 3: Motors
This is my ghetto 2 (the 3rd motor broke off) spiro, built on some scrap wood piece using lot of hot glue.
Step 4: Diffraction Grating
Step 5: Crystal Balls
Step 6: Slow-rotating Motors
Another cool effect is to slightly melt a CD or DVD and attach it to slow motor. Makes best effect with a white (combined from red, green and blue lasers) or multiline Argon laser.
Step 7: Optics From Sleds
Here I'm showing the diffraction gratings from various sleds (I can recommend the PHR-803T sled, there are 2 of them)
Step 8: Lumia Wheel
Well, in my case its more like "LUMIA DOOR"... but you get the point LOL
This effect is made using some kind of textured glass which is cut into a circle and slowly rotated in front of the laser.