I've just gotten back from a little trip to Target and low and behold it's not Haloween yet and there's already Christmas junk up (Bah Humbug I say!)
Anyway I found tucked off near the end of the lighting display a little box of battery powered LED lights! SCORE! I've been waiting for some of these for a couple years because I've failed at making a good set of my own.
So for the pricey sum of $6.99 plus tax I grabbed a set of multicolor. They also had a white only and a blue only set. Made by Phillips 18 3mm LEDs run off of 4 AA cells. Simple setup really and so far the construction seems decent. The Orange LEDs are noticeably more dim than the Red, Green, and Blue, especially from the side. But beyond that I have no complaints as of yet.
So without further ado... I present pictures form my brother's cheap little Casio Exlim.
The package to look for:
Out of the package:
Opened up with 4 Eneloops inserted, gives a view of the internal quality:
Another view including the 3mm LEDs:
Closer in to the 3mm LEDs, about as far as this little camera can get:
Okay close that thing up, put in the screw and flip the switch.
A slightly different exposure without a flash:
Another view:
And one last picture:
Runtime test in progress

I like these because they're AA based, which means I can run them off of abundant Eneloops. 4AA design means there's got to be some sort of minor intelligence put into the design I hope. So start scouting out your local stores to see what pops up. The standard plug in lights have more fancy LED based stuff this year but still have the standard LED strings like I've purchased the past couple years. So far I've had good results with teh phillips LEDs. Nothing overheated or burnt out yet... and I have family members who like to burn those things 24/7 when the season comes in. (at least the LEDs are using less power than those big bulbs we used to use.)
Anyway I hope this little corner of the forum gets views, but I think this is a good place to put this post.