We kept all of the lasers very low to the ground to avoid everyone's eyes. Future versions may turn the lasers off for a short time when they are broken for an added layer of safety.
We also made a couple of flashing signs out of red and white blinking bicycle lights. The house is at the end of a cul-de-sac, so we had to advertise to attract more attention.
Here is Alice in Wonderland with her pirate and gremlin friends navigating the maze.
My friend is offering them chocolate milk in the video so he can show off the pile of severed heads he has stored in the fridge.
Step 1: Parts List
Arduino Duemilanove with USB cord
4 green Lasers ($7.54 each at Amazon)
4 CDS cells ($0.50 each at Electronic Goldmine)
4 1K resistors
3 push buttons (arcade style buttons)
1 surge protector with switch
1 red beacon light
1 1000W fog machine
phone cord long enough to run to your sensors (cheap at the thrift store)
You will also need electrical tape, cardboard TP tubes, soldering iron with soldier, velum paper or some other semi transparent paper, and possibly some other small items.