I am using postal mailer boxes available at the post office. The ones that fit a 12x12 size, then cut down the sides like a magazine holder. I love the upright storage and I can change around and add to my collection as needed.
I sort my printed papers by occasion- breaking out Christmas, Valentines, Halloween, Easter, etc. Also group some by paper lines- Basic Grey for example. Assorted leftovers are then grouped by color or style- fall colors, brights, florals, etc. I have ALOT of papers. I keep the scraps right in with the grouping by adding them to an envelope mailing which fits in the slot with the larger box. I use the same system for cardstock- group by color, keeping the scraps with the color
Because the boxes are made of paper, I can paint/alter them to fit my decor. (on my craft-to-do list)
It's basically a low-cost version to the horizontal vertical Cropper Hopper system seen here:
http://www.cropperhopper.com/index.a...TS&Category=10