Something that blows my mind whenever I think about it:

Neon is a completely renewable resource. Other than some of the stuff that goes into the transformers, neon tubing (and the gas within) is 100% recyclable and never wears out. Ever. If the tube breaks, the neon escapes, so then you make a new tube and pull some more neon from the atmosphere, and there you go; the cycle of neon contiues.

Sorry to get soooo off topic; I've had too much coffee today.