They're not actually too big and clunky The wire is much smaller than the picture makes it appear. If you don't mind the box, you can use them as much as you like since you just pop in two AA batteries and go. It's got a clip too, to hook to a belt and such. It looks awesome and glows super bright.
I got 9 feet for 5 dollars on ebay, and I'm getting 18 more ft of a different type with a smaller box (uses the small round batteries, and comes with the batts) for another 5 (they were on sale for a day and I got to em). These particular ones are actually "shoelace" EL wire, but you can use them anywhere. It's nice though, because the battery strip is about... 1/2 inch in height, 2.5 inches long, and about an inch wide. (approx) so it can hook onto where the shoelaces loop closest to your toes. I'll be getting 4 lengths of around 32 (?) inches of wire. Still waiting on these pairs, but I'll let you know how good they are when they come in.
The first wire is going to my headgear and shirt, and I'm going to make some ghast pants and incorporate the shoelace EL wire into those.