I found these at Walmart yesterday for under $5. About 6.5' of LED light strip, self-adhesive, and the topside coated with something like silicone caulking. Uses a small remote control for power, color, and function. For such a cheap price, I figured I could grab a set and see how they might work for lights on a plane.
Anyone looking for some cheap lights to play with, check your local Wallyworld, in the electronics department. These are sold to be "mood lighting" on the back of television sets.