I just use folders. I guess I could put together some lists of filenames and use absolute pathnames, that way I can just cat the lists into an image dumper, but that would take ages of sorting through my tens of thousands of loli images and deciding which lists to add each one to.
Pity I don't have a "worksafe" folder, it's mostly stuff like panties, masturbation, dildos, intercourse, etc. Some are more likely than others to be worksafe (panties, for example? or backpacks?), but as I said, too tired to find the worksafe ones.