Between the cats and the little boys I have around my house, I don't feel safe setting my supplies up on my desk or a shelf, I keep everything organized in a big plastic tote and and small plastic tote. These paper organizers fit perfectly into my tote and I was able to get the lid on once I was done reorganizing. I wasn't able to do that before. Plus I free'd up half the room in the big tote for my larger tools. I thought I was going to need a new tote! Its so worth that $20 bucks.