I would like to offer an alternative solution. Since your laser is so cheap (inexpensive) you might want to buy about 6 to 8 of those. Make a circle out of plywood and cut out holes for each laser (holes are for the laser holder not the beam). Attach each laser into each hole. Then attach this disk (circle of ply) to a motor. This will create your vortex tunnel and be a cheap alternative. One more, thing; use dissipating fog fluid. Too much fog will take away from the effect. Hope this helps.