I had a bunch of EL wire left over from another project, and I wasn't really sure what to do with it. So I thought to myself, hey, cram it all in a jar! So that's what I did. I soldered all of my EL wire into one strand, made a power backpack that powers an EL wire driver from a pair of 9V batteries, and wrapped the strand around the inside of the jar.
Step 1: Parts
The parts you'll need are:
EL wire (I only used blue and white because that's what I had on hand, if I was building this from scratch I probably would use a bunc of different colors) (A good source for high-end wire is elwirepros.com, but eBay has some fairly good lengths of EL wire with free drivers super cheaply)
EL wire driver (make sure it's rated for the length of the strand)
Two 9V batteries
12V voltage regulator
Assorted soldering supplies, wire, heat-shrink tubing, etc.