I have both shop wiping rags that you get at Harbor Frieght or I also have a
paper towel that is made out of shreded cloth. They come sheets about 20
inch square and are very absorbant.

I keep them dry and stick the wiping rags in the dryer before I use them to
wrap parts..

I also have about 50 lb of desicant but haven't dried it out yet, so
sometime in the future I will make up decicant packs for each spare parts
package.

Most of my parts already have a film of diesel or lub oil on them and the
wrapping is to keep the sharp edges from punching a hole in the bag.

Steve