Paper organizing

I have a basket on the top of my cart with plastic envelopes that I cut the flaps off of - they hold my collections and a couple of themes. When I have diecuts or stickers or what not that go with a collection - I do store them with the PP.

www.hobbylobby.com/Scrapbook-Paper-Crafts/Storage-Organization/Memory-Keepers---13-x-13/p/20474?queryId=a8ae03238005a9aa895446ce90813b3c

I have 2 3-drawer plastic units stacked on my desk that hold some of my bigger themes (Christmas, travel, military, outdoors, Girl Scouts...) - PP and embellishments together.

The rest of my PP and cardstock is sorted by colour and stored horizontally on old Recollections Cubes (the ones with 3 shelves so 4 compartments). I have 5 of those cubes (and one more with a different shelf configuration that hold my paper pads) stacked two high on top of a 3x3 Kallax

My other embellishments are stored by theme (in the middle of my cart) and by colour (in an Alex drawer) in 4x6 Iris photo boxes

I've shared my paper storage "what I do" ideas here before.

I use 13 x 13 plastic storage envelopes.
www.hobbylobby.com/Scrapbook-Paper-Crafts/Storage-Organization/Memory-Keepers---13-x-13/p/20474

Patterned paper is organized by pattern.
Floral, wood, stripes, polka dot, grunge, brick, checkered, water color, etc...
I do have some separate envelopes by brand. Basic grey, Daisy D's, etc..

Cardstock is organized by color.
Red, yellow, blue, purple, etc...

Themed paper, goes in that themes envelope.
I have 40+ theme 13 x 13 plastic envelopes (travel, Night out, School, outdoors, kid stuff, pets, Christmas, birthday, etc..).
Everything that is related to a theme, goes in that theme's envelope. Paper, stickers, die cuts, embellishments, titles, frames, alphabets, etc..

12 x 12, 8.5 x 11,and scraps....are all in the same envelope.

I have been using these cardboard paper boxes from Totally Tiffany:

www.scrapbook.com/store/sr-a26.html

They are not expensive and, while not the sturdiest thing in the world, I have stuffed them pretty full and they hold up. I tend to put my bags of paper/embellishments into these so that I have a vertical solution, but it is handier when I don't have the things in bags and then I can just flip through to find the papers I want.

I have also broken down older collections, and selected some less loved papers to use for their b-side which I have organized into rainbow order and pull from when I need a little something in a specific colour. I store these the same way, and this little set of papers is something I often pick through.

This is pretty much how I organize my paper. Embellishments go in Iris cases. The exception is if I buy a new line and the embellishments, they go in a separate envelope together until I've used a good chunk. Then it's into my by theme system.

I also cut apart sticker sheets after I've used a good bit of them. There are always elements that fit in a different theme, so those get placed in the appropriate Iris case. An example would be a summer line that has food elements or sports elements.

I have been scrapbooking for 30+ years, and as my paper supply has grown and sources have changed, my paper storage has morphed. Presently, I have 4 rolling file carts from Office Max/Depot that store paper in legal size hanging file folders by theme ordered by brand manufacturer....So there's Winter/Christmas, Spring/Easter/School/Babies, Summer/Travel/Beach, and Fall/Halloween/Thanksgiving. I also have a couple of Iris boxes for themes that aren't seasonal, like Birthday and Outdoorsy. I have a fifth cart for my Favorite brands of non-themed papers and a sixth cart that has more favorite brands as well as papers organized by design only -- florals, ledger/ruled, woodgrain, stripes, plaid, Dots, color, etc. And there's more.
I belonged to Hip Kit Club for a few years, and what I have left from those kits is in a basket sorted by designer (the majority of their papers were by a handful of designers during the time I was a member.)
I also have a few kits left from when I was a member of Studio Calico, and those are in another basket. And there's more.
I also have two bins of "Retro" papers from the first 10 or so years I shopped at LSS's in the area, organized by brand -- Autumn Leaves, Basic Gray, Cosmo Cricket, Fancy Pants, KI Memories, K & Co, Making Memories, October Afternoon -- to name a few. Then, I have a new section I added last year for collections where I bought a lot of the papers and embellishments and I keep those in 1" deep files with a flap (from Amazon). Since the LSS's have vanished and I've banned myself from Kit Clubs, I now find myself having to buy paper collections and collection kits because single papers are not always offered, so I buy a kit to get a couple of papers I like and hope I will use the rest.
Regarding embellishments -- if the collection has embellishments that specifically match it, I store those with the papers, otherwise, I store embellishments either by theme (in Iris cases) or type (if non-themed). - i.e. brads with the brads, flowers with the flowers, etc. It's my system, it works for me, I know where to look for something when I work on a page.

I'm a big fan of vertical storage for paper. I use the TT magazine holders, similar to what was linked upthread, except they are made of super thick plastic, not cardboard. 5 of them fit perfectly into an IKEA Kallax unit and they hold a TON of paper. For my "regular" stash I sort patterned paper by color, and keep all sticker sheets together, and all die cuts/ephemera packages are stored together. I tend to craft across paper/manufacture lines, so keeping the different pieces of a collection together doesn't make sense.

However, I DO organize this way (keep collections together) for holidays & travel and I've recently started doing it for birthday, too. For any collections I keep together, I take the paper out of any packaging and place into a clear plastic sleeve that has no flaps (Amazon). There is plenty of room in an envelope for a full collection of paper, plus the different embellishment packs (which I keep in the packaging). The sleeves come with index tabs if you like to label things (I don't).

I had the Cropper Hopper paper holders but they were too tall for the Kallax. I got the Storage Studio ones and they’re perfect. Pretty much the same thing just a little shorter.

My solid cardstock is stored together in rainbow order ( I started that in grade school with my crayons).

Most of my paper is stored by whatever company designs them. I also use the plastic dividers from my Cropper Hopper stuff.

Misc. papers are stored together organized by color.

Embellishments that go with collections are stored nearby in a plastic envelope.

When I’ve used up most of a paper collection it goes to general population. Same with embellishments.

I'm neither a theme nor collection scrapper & do not sort paper by theme, collection, or color. Rather, I primarily organize supplies by type & secondarily by manufacturer. Paper is stored vertically in magazine-style paper holders/pouches. Color coding makes it easy to find all supplies in my inventory for each frequently-used manufacturer. HTH & you find an organizational system that works for you.

I do not have a dedicated craft space at the moment so my 12x12 paper is stored vertically on the bottom shelf of a bookcase. I have random paper pads, then some WRMK paper accordion folders with single sheets separated by manufacturer and organized by collection. Then I have the HL plastic envelopes with more recently acquired collections in them- I have all the items I have from each collection in its respective envelope with any 12x12 pads next to it. These envelopes are organized by manufacturer/designer. It all fits on the approx. 3 foot long shelf, with smaller, older paper pads in a bin propping the paper up.
I find it works for now although I plan to redo it when I have a more dedicated space. I do like having the paper vertical and storing it all in one place, if I had more I would probably eliminate the extra items in the envelopes and have just paper on the shelf. I might have to do that soon as I am getting close to running out of room!

Oh artbabe, this is the biggest hurdle of all. I am absolutely no good at this; I FAIL every time I try to re-do my paper filing.
I have my cardstock (along with one-color pp) stored in Artbin satchels by color. This is where my success ends.
Some of my pp is stored by theme, some by manufacturer, and some are just in random stacks that I have given up on.
But I love all of it and I won't give up!