I need to remember to take a picture, as I don't usually have blocks, but rather, pieces.
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So, I draw an old-fashioned diagram on graph paper, code the fabrics with letters, and fill in the diagram as I pick each block up. I stack the "blocks" for each half row and put them on a big cardboard covered with a folded sheet. I put a sticky next to each pile, which sometimes comes off, hence the backup diagram. When the cardboard is full, I fold another layer of the sheet over and make another layer of blocks. The last of the sheet goes over the top, along with the diagram, and the entire thing goes into a dark spot until I'm ready for it. If I can,t quilt for awhile, it just sits there quietly. When I start working, I use other, smaller cardboards covered with muslin towels to carry and store rows I am assembling. The pieces don't slide, and the boards can be slid into thin spaces over the tops of boxes in the closet.
Hugs,
Charlotte