From the post Your Life in Weeks:
"We tend to feel locked into whatever life we’re living, but this pallet of empty boxes can be absolutely whatever we want it to be. Everyone you know, everyone you admire, every hero in history—they did it all with that same grid of empty boxes.
The boxes can also be a reminder that life is forgiving. No matter what happens each week, you get a new fresh box to work with the next week."
This is the large version, and the boxes are just big enough to write a few words in. It's built to last until you're 90, printed on an archival grade 100lb matte poster paper.
Check out the pack options for bulk discounts on multiple posters.