String an optic fibre around the eaves of your house. transmit nice color through it. When icicles grow on the optic fibre they glow.-- xaviergisz, Mar 29 2004 similar... http://www.halfbake..._20Enchanted_20Eave [po, Oct 05 2004] How would the effect differ from regular icicle lighting? (From which I have seen icicles growing and glowing.)-- DrCurry, Mar 29 2004 I disagree with Toadinnov. This invention would be done with an unsheathed optic fibre (eg a simple strand of plastic) that has minimal side emission. When the icicles grow, they would disrupt the total internal reflection of the optic fibre, hence 'tapping out' some of the light.-- xaviergisz, Mar 29 2004 Now can you invent something to make icicles grow on my eaves?-- simonj, Mar 29 2004 random, halfbakery