The Laser Vortex was extremely popular last year and many made one this year as well. The wormhole like effect is great for many different themes. Last year I used Deep space; this year is was a portal into another realm. Made with spar parts and maybe a trip to the hardware store, you can have one in just a few hours.
This new instructable will show you haw to build a Laser Vortex with extended range, sharper display, less noise and the ability to create a starburst vortex. You can use this instructable to fine tune your old one or create a better one from scratch but this time you may need to salvage some junk parts or order some materials. You can take it as far as you want.