Personal Development
I have a larger area of Focus I call Personal Development. In addition to GTD stuff this is also where, personal health, estate planning, knitting, spinning, reading, sewing, weaving, quilting, scrapbooks, photography & genealogy tasks sit as separate folders with projects in them under the larger Personal Development folder. Basically anything that improves me personally goes here.
It's also where my "bucket list" of things I may consider doing someday is listed, things like learn calligraphy, hike a local mountain, start drawing with colored pencils, get a GTD coach to come for a personal system review and similar things.
For me they are all inactive or on-hold projects. I may or may not make them active ever but at least I captured that I have considered doing them eventually.