This is the entry to a small bedroom converted into my Art Workroom. My artwork literally covers every available square inch of wall space.

#23- Where I store my large sheets of watercolor paper and cardstock (each type is in a separate heavy clear plastic bag and labeled), stored in a modified packing box for mirrors. When I need something I just pull it out, or pull out the bag to choose a colored cardstock. My off-cut pieces of  matboard are in a holder just in front. See below.

I'm lucky, the store (Mona Lisa) I buy large sheets of paper from, wraps it in heavy duty plastic bags which I recycle and use in my art room.