I have little LED lights around the side of my house because I got tired of forgetting to leave the outside lights on at night and they provide a decent amount of illumination while using little power. I have them on a photocell timer. I don't plan to take them down until we move out or they burn out (in which case I would replace them with new ones). They're mostly white except the string next to our bedroom - that one is red because white was too annoyingly bright even through closed blinds. The red is nicely subdued.

This is at least the third house at which I have had some sort of permanent installation of lights typically sold around the holidays. The holiday is relevant to me mainly in that I know that after it I can usually find them on sale for 50-75% off :)