Nice tip but I'm a "Notepad in the pocket person taken to extremes". Yep, usually carry at least two in my shirt pocket, sometimes 3! And they are color-coded, too. (Red one is for "things to buy"...as in "red/deficit"!; Green one is specifically for garden supplies, etc...green as in plants/grass, etc. Blue one is for misc other stuff.)
However, I also have home-made blackboards in the shoffice, one is 18" wide and 4 ft long attached to a door. It's used for various notes, picture drawing (DD!) and I even have different colored chalk in a box nearby.
Shoe