I’ll preface this post by pointing out that clearance deals vary from store to store. However, I’ve found Maglite and Nite Ize LED upgrade bulbs on clearance at three separate Targets. These replacements for standard flashlight bulbs shine for tens of thousands of hours, and they last longer than regular bulbs on a given set of batteries.
Maglite designed several versions of their LED upgrade bulb, and each version goes with a flashlight that runs on a specific number and type of battery cells. The Nite Ize versions will work in flashlights that run on two to six cells. I’ll point you to the Candle Power Forums to discover the finer points of each brand.
The official Maglite bulb was selling for $13, about $6 less than the normal price. I bought the Nite Ize version for $7, down from $10. Like I said, your local discount, if any, will likely vary. But you might want to browse a bit, next time you’ve got a few minutes.