Extended-reach lighters are great for lighting barbecues, campfires, and candles, but they can get expensive. This video explains how to open one up and replace the empty lighter fluid reservoir so you can save a few dollars.
As shown in this YouTube clip, the fluid reservoir inside a disposable multi-purpose BIC lighter is essentially just a normal cigarette lighter. Using a screwdriver, remove the single screw holding the two sides of the plastic casing together, and then carefully break the seal along the line where the two halves meet. You should now be able to pry open the back and remove the reservoir. Look familiar? Grab a new BIC cigarette lighter, remove and trade the fork, spring, and jet components as instructed, and place the new lighter into the plastic casing.
Now it should light good as new. With BIC lighters selling for $2 or so, this is much more cost-effective than springing for a new extended-reach lighter. If you're budget is tight, or you're just trying to be as frugal as possible, it's a super easy way to save a few bucks.