I learned about using bamboo skewers in a previous thread about the care and maintenance of pocket knives:
I'm very pleased with how much more effective the skewers are on nooks and crannies than pipe cleaners, match sticks, toothpicks and the like. As Robin notes, one thing that sets them apart is how much pressure one can apply without their breaking or giving way. They're also relatively inexpensive, and available at most grocery and big-box stores. Given their length, each skewer can last a good long time, whittled down when the end becomes dirty or needs a new or narrower point, and/or "feathered" to sop up more oily gunk when indicated.
Hint: sharpen your knife first, so that you can easily whittle or feather the skewers as needed.
I also use mineral oil frequently, but have recently added Quick Release (specifically for pivots) as per a recommendation from Gunstockjack.
Slick stuff.
Portable cleaning, maintenance, sharpening, and carrying 'long:
~ P.