Not that it helps indoors, but I got a 100 LED string light set the other day, it has a little solar panel (it works!) and has a light sensor and on/off switch, so all bases covered. The price needs to come down, but I will likely end up throwing away or giving away my giant old tangled collection of string lights, and replacing them when I can, as LEDs become cheaper. After Christmas is a good time for that.

One small step for the planet that my grandchildren will inhabit

So far the 'Elite' bulbs from a company in Ohio called TCP are the best. They cost $20 each but people and objects that are near them look more pleasing and natural. They are also better at casting light in all directions.

I bought some $10 ones from Ikea that claimed to have better color (CRI value) but I don't like the way they cast light mainly in one direction (though their appearance suggests otherwise).

Philips has spent 100% of their R&D money on LED for the last 7 years while GE was sandbagging and foot dragging.

At 94 lumens per watt it is higher efficiency than CFL (50 to 70 lumens) and about 5x more efficient than incandescent (16 lumens/ watt).

http://www.homedepot.com/p/Philips-60W-Equivalent-Soft-White-A19-LED-Light-Bulb-2-Pack-455576/205815532?cm_mmc=Shopping|VF&gclid=CKGCg5qHnMYCFYaQHwodtq8Auw&gclsrc=aw.ds

we have several multi lamp fixtures in our house and I've changed them all out to the 40 and 60 watt daylight equivalent LEDs. I really can't tell any difference in our electric bill but I can say that they are brighter than the CFL's I replaced. I've been noticing that the LED ballast puts off a lot of heat but not nearly as much as the CFLs or the incandescent of long ago. We do like the added light plus when you turn the LEDs on they are bright right now not have to warm up like the CFLs have to do. I've been buying a few a week and have a few to go and then we'll be all LEDs. I love the thought that we're doing what we can when we can to help.