It turns out, in practice, the "4 categories" of Marie Kondo are a bit simplistic.
She has a category, Miscellaneous, and, well, at least for me, this was actually the bulk of my stuff.
So, here for your organizing enjoyment, are all the miscellaneous categories I ended up with. I sorted through each of these separately.
Not in any particular order listed as I just kept a note. ==> Let me know if I forgot anything.
Now I understand why this took a while....
Papers and documents - taxes, contracts, medical records, old x-rays, rental agreements from college, insurance cards, receipts, articles
Pictures, Painting, Posters
Baby clothing, shoes, and cloth diapers, blankets
Cleaning supplies - Kitchen and bathroom
Food, including the pantry and the freezer
Plants, indoor and outdoor what is in pots
Camping gear - include suitcases and travel bags
Music - CDs, records, that old Sony player, tapes
Videos - VHS tapes and DVD
Holiday items (all holidays)
Music - Sheet music, instructional videos, books, binders with scores
Music - Musical instruments, recording supplies, gear and cables
Garden stuff - pots, sprinkler supplies, tools, scraps of shade cloth
Tools - hand and power. How many drill bits spark joy? (Turns out: all of them)
Motorcycle stuff - gear, parts, tools, supplies, clothing
Kitchen - dishes, pots and pans, cutlery and silverware, machinery, cookbooks and recipe boxes
Games - board games, puzzles
Sporting goods - Martial arts gear, sporty toys, balls, juggling balls, weights, exercise equipment
Art supplies - acrylic paint does expire
Stationary - binders, papers, old glue, pens and pencils, envelopes, cards
Crafting supplies - glue gun, pompoms, ribbons, gift wrap
Plants - indoor and outdoor if it's in a pot
Medical supplies - braces, pills, creams, and that box with the good drugs
Cosmetics and beauty items - brushes, clippers, grooming tools
Jewelry - earrings, necklaces, temporary tattoos
Computer hardware- cables, extra mice, adapters, old memory cards
Computer software - CDs, boxes, how-to books and strategy guides
Apps and Bookmarks - on the computer and on the phone
Old journals, letters
Knickknack - Anything not covered by other categories
Furniture - especially "just because I needed another shelf", curtains, lamps
Pet supplies - if you have a lot of pets, includes pets like worms and cricket farm, and the fish that don't stop breeding
Cloud storage - if you are out of space or can't find stuff anymore
Containers - baskets, boxes, tubs
Vehicles - Bicycles, cars, skateboards, boats, roller skates, ice skates
Collections - cards. stamps, memorabilia, pins
Jackets, coats, windbreakers
Shoes, including slippers
Winter clothing, including ski clothing
Sports clothing, including swimsuits
Books I wrote or co-wrote, including old reference manuals
Kindle / electronic reader samples and wishlist
Photos and Photo albums
Dolls and doll clothing
History of my life items, since birth
Books I've had since I was a kid
Children's life items (minus clothing and toys, books)
Art - What do you care to keep?
Everything I ever wrote...
Secret boxes full of old memories
Journals - I don't want anyone to read them after I die
Binders of course materials and old letters